8-Channel 10-Amp ProXR Lite Custom Product

The ProXR Lite SPDT Relay Board

ProXR Lite Relay

In this tab we'll take a look at the board design itself.  The ProXR Lite series controllers are machine manufactured for a highly accurate and reliable design.  Fully tested before they leave the production facility each ProXR Lite controller is ready to stand up to rigorous demands from heat, cold or vibration.  The best test of all is the numerous boards in the field from customers all over the world in all sorts of conditions.  Take it from us, these controllers will hold up!

No Break-A-Way Tabs

This board DOES NOT have Break-A-Way tabs.  When the blank board stock was manufactured the scoring for the tabs was not done.  All other functions of this ProXR Lite board remain the same.  It just can't be made smaller.  NCD made a few of these before noticing the scoring was not done.  They offered these boards to us at a discounted price of $40 off, if you don't need a smaller footprint this board is a great option.

Not Expandable

Unlike it's big brother, the ProXR Series, the ProXR Lite series controllers are NOT expandable.  The firmware still thinks 256 relays are available but the relay portion of the controller only responds to the first 1, 2, 4 or 8 relays in Bank 1.

ProXR Command Set

The ProXR Firmware installed on the board has more commands and functionality than any other board on the market!  The list of commands and parameters this board is capable of is extensive!  Writing your own program can be done in just about any programming language so you can use what you are comfortable with!  Software is available for those who aren't programmers.  You can find the complete command set in the ProXR Quick Start Guide.

Base Station Software

Base Station Software was designed to help you learn the ProXR command set.  Explore ProXR features using it's Graphical User Interface.  Watch data bytes flow to and from the board, so you easily understand the command execution process.  There is no faster or easier way to learn how to automate than Base Station, as it was designed to work with the complete array of communication modules.  Base Station software supports every feature of this device - no other controller manufacturer even comes close to offering this type of software. 

Easy Software Development

Most of our customers write their own program for controlling these relays.  Since you can use almost any programming language, you can use one that is most familiar to you so you don't have to learn a new language.  These boards support the Serial Port Profile, meaning they will mount to the computer as a virtual com port. This makes it very easy to send commands to the board.  Not a programmer, check out N-Button!  Software that allows you to configure buttons to control relays and read the status of those relays without programming using point-and-click action.  Click Here for More

Essential Power Requirements

Applying Good clean power to the board is essential for the operation of the board.  Not only for the switching of the relays but the firmware that processes the commands.  Without good steady clean power from a regulated power supply the board simply will not function correctly.  All boards on the site require 12 VDC power.  The PWR12 US power supply is a 120VAC to 12VDC 1.25A 60Hz regulated power supply and it plugs into the barrel connector on the board.  The output connector is a 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female R/A barrel connector.  We also carry an international power supply with interchangeable adapters for international customers. Learn More

Read Analog Sensors

All ProXR Lite controllers offer a 8-Channel 8/10-Bit Analog to Digital Converter in addition to relay control.  Read and control from 8 sensors per board from 0 to 5 volts (0 being a dry contact)!  A/D inputs are ideal for reading the on/off status of switches, connect a switch between input and ground and software may then be used to monitor the contact closure status of the switch.  AD inputs can also be used for reading variable resistance signals, the board will then will return a value between 0-255.  Click the grey Data Sheets tab above and look for the AD8 Quick Start Guide to see the full AD command set.

SPDT Relay Installed

This device has SPDT relays installed.  SPDT Single Pole Double Throw Relays have three connections - Common, Normally Open, and Normally Closed.  When the relay is off, the common is connected to the normally closed connection of the relay.  When the relay coil is energized, the Common swings to the Normally Open Connection of the Relay.  You can wire the device you are switching to either the Normally Open or the Normally Closed position using screw terminal connections.  The maximum guage wire the terminal can handle is 14 ga but we have used up to 12 ga solid core for several applications with no issues.

2-Million Cycles

ProXR series controllers are designed for long life, you should expect to get years of service from your controller and literally 2-million cycles from the relays on board.  With a 5-year warranty and a money back guarantee you have nothing to loose!  Place your order now, while everything is in front of you.

This Board is RoHS Compliant

This board is led free and RoHS Compliant.  If your requirements are for RoHS compliant parts this board is manufactured with RoHS compliant led free parts and solder.

30-Day Warranty/Money Back Guarantee

ProXR Lite series controllers are guaranteed against manufacturing and functionality defects for a full 30 days!  Not to mention a 30-day money back guarantee!  If for any reason you are not happy with a relay purchased from Relay Pros, simply return it within 30 days and we will give you your money back!  Controllers that are damaged by our customers will not of course be warranted under any circumstances. 

Induction Suppression

Perhaps the most overlooked aspect of relay control is proper handling of inductive loads. Inductive loads can best be defined as anything with a magnetic coil, such as a motor, solenoid, or a transformer.  Controlling a inductive load using this relay board requires an induction suppression capacitor for each relay being used.  The purpose of this capacitor is to absorb the high voltages generated by inductive loads, blocking them from the contacts of the relay.  Without this capacitor, the lifespan of the relay will be greatly reduced.  Induction can be so severe that it interferes with the logic of the board, causing relay banks to shut down unexpectedly.  For more information view our Induction Suppression Video.

Shipping

The boards sold are brand new units shipped from our office conveniently located in Missouri.  These boards are completely tested before they are released for shipping  With so many boards on our site it is impossible to stock boards, please allow two to three days production time for your order to ship.  If you have any questions please feel free to call our office at 800-960-4287 or e-mail us at sales@relaypros.com.

ProXR Lite Is Here!

A more streamlined manufacturing process brings a more durable, reliable and better relay board to the market.  Here's a lists of great features:

User Friendly Board Design
• Single Pole Double Throw Relays Installed
    - Wire to Normally Open or Normally Closed Position
• Screw Terminal Contact Closure/Relay Connections
• RoHS Compliant

ProXR Lite Features
• Industry Leading ProXR Command Set
• 8-Channel 8/10-Bit Analog to Digital Converter
• Highly Reliable Board
• Assign up to 16 Programmable Timers

ProXR Lite Limitations
• This controller cannot be expanded

The ProXR Command Set

"The industry's most powerful relay command set"

Simple Serial Commands. Serious Control.

The ProXR family of controllers is driven by a powerful, low-level serial command set. You send a short numeric or Hex command to the board - and the board responds immediately.

This design keeps your software fast, reliable, and easy to integrate into almost any platform, from small scripts to full automation systems.

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How You Talk to the Board

All ProXR controllers operate using a small sequence of bytes sent over a serial connection.

You can send commands as:

• Decimal byte values
• Hex byte values

Both formats perform the exact same operations - choose whichever format your software or controller prefers.

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Relay Banks - How Large Systems Stay Simple

ProXR and ProXR Lite controllers organize relays into groups of eight called banks.

Each bank contains:

• Relay 1 through Relay 8

ProXR Lite boards are available with 1, 2, 4, or 8 relays and always operate within Bank 1 only.
Expandable ProXR boards use the same bank structure, but can add additional banks using XR expansion boards as your system grows.

For example:

• An 8-relay controller uses one bank
• A 32-relay controller uses four banks

Instead of creating a different command for every relay in a large system, the ProXR firmware lets you:

• Select a bank
• Send simple relay commands within that bank

This keeps the command structure fast, compact, and easy to manage - from a single-bank ProXR Lite installation to large, multi-bank ProXR expansion systems. From a single 8-relay board to a fully expanded 256-relay system, the command structure does not change.

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Two Ways to Address Relays

You can control relays in two different (and complementary) ways:

• Current Bank Commands - select a bank once, then issue fast relay commands
• Bank-Directed Commands - specify the bank directly inside the command

For small systems, selecting a bank once and sending fast commands is extremely efficient.
For larger installations, bank-directed commands make software logic easier and more robust.

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What You Can Do With the ProXR Command Set

The ProXR command set is designed to support real automation projects - not just basic relay switching.

Common operations include:

• Turn individual relays on or off
• Turn multiple relays on or off in a single command
• Read the on/off status of any relay
• Control relays by bank for large systems
• Read analog sensor values (A/D inputs)
• Assign and control internal timers
• Trigger relay pulses and timed operations
• Use onboard logic features such as the Relay Activator system

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What a Command Looks Like

At its simplest, a relay command is only three bytes:
254 8 1 - Turn ON relay 1 in bank 1
0xFE 0x08 0x01 - If you require Hex

The controller processes the command and returns a confirmation byte 85 when the operation completes.

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Designed for Any Programming Language

Because the ProXR command set is pure byte-based serial communication, you can use it from:

• Python, C#, C++, Java, Node, LabVIEW, and PLC environments
• Embedded controllers and microcontrollers
• Industrial automation and building control systems

If your software can open a serial port and send bytes, it can control a ProXR controller.

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No-Code and Learning Tools

If you do not want to write software immediately, free tools are available:

• Base Station Software - explore every command, watch live data, and test automation logic
• N-Button Software - create buttons and automation actions without writing code

These tools use the same command set your own software will use - making them ideal for learning and prototyping.

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Full Command Reference

This page is intended as a high-level overview of how the ProXR command system works. For the complete command reference, including all relay, bank, timer, and analog input commands, download the official guide:

ProXR Enhanced Quick Start Guide

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Relay Grouping - Switch Multiple Relays at the Exact Same Time

Control Neighboring Relays

Relay Grouping lets you control multiple neighboring relays as one logical output.

Think of it like building your own multi-pole relay:

• 2 relays → act like a DPDT
• 3 relays → act like a 3PDT
• ...
• up to 8 relays at once in the same bank

All of them switch together, using one command.

How it Works

Relay Grouping adds one extra value to a normal relay command called the Neighbor parameter.

The Neighbor value simply means: "Also apply this same command to the next 1-7 relays."
So instead of turning on just one relay...
you turn on that relay plus its neighbors in one shot.

Neighbors must stay inside the same relay bank

For example:

• Relay 1 can have up to 7 neighbors
• Relay 8 has no neighbors, because the next relay is in the next bank

This keeps grouping clean and predictable.

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Prevent Overlapping Relay States

Safe Break-Before-Relay Switching

Some applications require more than simply turning a relay on or off. When controlling motors, actuators, gates, shades, and door systems, it's critical that two opposing relays are never active at the same time.

The ProXR firmware includes a built-in Break-Before-Relay command that:

• Turns all relays off
• Waits a short, controlled delay
• Then turns only the selected relay on

This prevents overlapping relay states and eliminates the risk of driving a motor intwo directions at once.

Break-Before-Relay Command Example

This example performs a safe switch operation and then activates the selected relay.

Decimal:  254 46 0 0
Hex:  0xFE 0x2E 0x00 0x00
When the operation completes, the controller returns: 85 (0x55)

This safety behavior is handled entirely inside the ProXR firmware, so your software does not need to manage timing or relay interlocks.

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Relay Timers

Relay Timers - Built-In Time Control

ProXR controllers include 16 built-in relay timers that let you turn a relay on for a specific amount of time - without your software having to turn it back off.

This is perfect for applications such as:

• Door strikes and mag-locks ("buzz someone in")
• Key-card and access control systems
• Gate and barrier controllers
• Lighting and automation events

Once a timer command is sent, the controller handles the timing internally.

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Two Simple Timer Modes

ProXR relay timers support two easy-to-use modes:

• Duration - turns a relay ON for a specified time, then turns it OFF automatically
• Pulse - waits for the timer to expire, then briefly activates a relay

Most access-control and automation applications use Duration timers.

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Simple Duration Timer (Most Common Use)

A duration timer turns a relay ON, holds it ON for the programmed time, and then turns it OFF automatically.

You can program:

• Hours
• Minutes
• Seconds

Each ProXR controller provides 16 independent timers that can be assigned to any of the first 256 relays.

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Duration Timer Command Example

Send Bytes (Decimal):  254 50 50 0 0 5 0
Send Bytes (Hex):  0xFE 0x32 0x32 0x00 0x00 0x05 0x00
This example activates a relay for 5 seconds, then turns it off automatically.

When the command completes, the controller returns: 85 (0x55)

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Timing is handled inside the ProXR firmware, so your application only needs to send a single command to perform the entire operation.

Note: ProXR controllers do not include a real-time clock. Timers are intended for event-based timing (such as opening a door for a few seconds), not for scheduled calendar-based automation.

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Relay Flashers

Relay Flashers - Built-In Blinking and Pulse Control

ProXR controllers include a powerful background relay flasher engine. Once a relay is assigned to a flasher, the firmware automatically turns that relay on and off for you - no software timing loops required.

This is ideal for:

• Status indicators and stack lights
• Warning beacons and alarms
• Heartbeat and activity indicators
• Simple pulse or attention signals

Because flashers run inside the controller, your PC or PLC does not need to continuously send timing commands.

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Set the Flash Rate (All Flashers)

You can set the flash speed for all active relay flashers with a single command. The speed parameter ranges from 0-255, where:

• 0 = fastest flash rate
• 255 = slowest flash rate

This example sets the global flash rate:
Decimal:  254 45 0 128
Hex:  0xFE 0x2D 0x00 0x80
When the command is accepted, the controller returns: 85 (0x55)

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Flasher commands can also be combined with relay timers and other ProXR features inside Base Station, making it easy to build pulse, blink, and notification behavior without writing custom timing code.

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Base Station Software

Device Command Sets

Base Station asks the controller which command sets it supports, then displays them when the software launches. Some devices show more command sets, others fewer - it's always based on the board.

ProXR users can access the entire ProXR Command Set to turn relays on/off and run every available function.

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Control All ProXR Functions

Turn relays on or off, read relay status, monitor inputs - Base Station gives full ProXR control through a clean point-and-click interface.

For programmers, Base Station also shows every command being sent to the board, making it a great tool for learning and development.

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Useful Features

There are some useful features to look for when using Base Station Software to control, test, or configure your device:

• Links to Quick Start Guides and documentation
• Discovery of network devices with IP address display
• Command Set Window for viewing raw commands (especially helpful for ProXR users)
• Relay Activator with Analog Inputs

The AD8 Command Set

"This isn't just a relay board - it's a control system."

Reading Switches/Variable Resistance Signals

This controller includes eight channels of 8/10-bit Analog-to-Digital Converters capable of reading 0 - 5V DC signals. The ADCs allow you to monitor external sensors or detect contact-closure inputs. Connect temperature sensors, light sensors, current sensors, buttons, switches, or any device that outputs a 0 - 5V signal or simple contact closure.

• With 8-bit resolution, inputs convert 0 - 5V into values from 0 to 255
• With 10-bit resolution, values range from 0 to 1023

Resolution is software-selectable. Request an analog value from the controller and it responds instantly.

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A/D Inputs

All ProXR Lite boards and ProXR boards that begin with ZADR or ZADSR include an onboard 8-channel Analog-to-Digital converter in addition to relay control. Each channel accepts a 0-5V DC input and converts it into a numeric value for processing.

Using the AD8 Command Set, analog voltages are translated into digital values (8- or 10-bit resolution, depending on configuration), making it easy to monitor and act on sensor data from a wide range of devices.

Each analog input can be configured to turn relays ON or OFF, toggle relay states, flash relays, enable or disable flashing, send push-notification data, and more - all based on live input values read in real time.

As shown in the graphic, ProXR AD8 controllers are available with multiple analog input connector options. One of the connector styles shown corresponds to the specific board you are viewing, allowing you to quickly identify how sensors will physically connect. All analog inputs share a common ground, simplifying wiring and making it easy to connect multiple sensors to a single controller.

Once connected, A/D input values can be used consistently across N-Button and Base Station software for automation, relay control, monitoring, and diagnostics. This unified approach ensures predictable behavior from hardware to software, whether you are building a simple monitoring system or a fully automated control solution.

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Analog Inputs Controlling Relays

ProXR AD8 relay controllers allow analog inputs to directly control onboard relays using the same A/D input data used by N-Button and Base Station software (see Relay Activator section below). This makes it easy to monitor sensor values, automate relay behavior, and visualize input data across all supported software tools.

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Analog to Digital Connections

AD8 controllers are designed for stable sensor and switch monitoring. A/D inputs should never be left floating - each input must connect to a voltage or ground.

A built-in 10K pull-up/pull-down resistor (jumper-selectable) ties each input to +5V or ground to prevent floating conditions. While this resistor adds slight loading, the improved stability far outweighs any minor interference.

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AD8 Command Set

The AD8 Command Set reads analog voltages using the controller's 8-channel 8/10-bit ADC.

• 8-bit mode: Converts 0 - 5V to values from 0 to 255
• 10-bit mode: Converts 0 - 5V to values from 0 to 1023

Because 10-bit values transmit as two bytes (MSB and LSB), reconstruct the full reading using: 10BitValue = (MSB - 256) + LSB

Reads the 8-Bit Analog Input of Channels

This command will read the Analog Input of Channels 1-8 and return an 8-bit value for each.

Send Bytes:	Byte 1:	Byte 2:
Function:	Command	Parameter (Channel 1-8)
Decimal Values:	254	150-157
Hex Values	0xFE	0x96 - 0x9D
Receive Byte:	Decimal:	0-255
	Hex:	0x00-0xFF

These are just a few examples from the AD8 Command Set to help illustrate the command structure. For the complete list of commands, download the AD Quick Start Guide.

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View A/D Input Data in Real Time

Base Station software allows you to read all analog inputs in real time while clearly displaying the exact command data being sent to and from the controller. In the example shown, all eight A/D input channels are read simultaneously and displayed as live numeric values along with a real-time graph, making it easy to visualize how each input changes over time.

Because Base Station shows the actual commands used to read the A/D inputs, it becomes an invaluable learning and diagnostic tool. You can see precisely how input values are requested, returned, and interpreted by the controller, then copy those commands directly into your own applications or custom software. This dramatically simplifies development, testing, and troubleshooting when integrating A/D inputs into larger systems.

Whether you are validating sensor behavior, monitoring multiple inputs at once, or building your own custom control software, Base Station gives you clear visibility into both the data and the communication behind it.

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Relay Activator

Relay Activator and Analog Inputs

Base Station Software's Relay Activator is ideal for applications that primarily rely on computer control but still require occasional manual operation. By connecting external buttons or switches, you can take direct, hands-on control of any relay without giving up software-based control.

This creates true bi-directional control. For example, a relay can be turned ON through the computer interface and later turned OFF using a physical switch - or vice versa. Whether you're testing, troubleshooting, or building a hybrid manual/software-controlled system, Relay Activator keeps everything synchronized and predictable.

As shown in the example, each input includes a pull-down menu that allows you to select exactly how that input will control a relay. This makes configuration fast and intuitive - simply choose the desired action for each input without writing any code.

Each of the 8 input channels can be configured to control relays 1 through 8, with multiple action types available. This flexibility allows every input to perform exactly the function your application requires.

This level of control makes Relay Activator perfect for operator panels, test benches, safety overrides, and any application where manual interaction and software automation need to work together seamlessly.
AD8 Relay Activator Quick Start Guide.

Available Relay Actions per Input
Each input can be assigned one of the following actions:

• Momentary Control - Activates the relay only while the input is engaged
• Toggle Relay State - Alternates the relay between ON and OFF
• Turn Relay ON - Forces the relay into the ON state
• Turn Relay OFF - Forces the relay into the OFF state
• Flash Relay (Momentary) - Pulses the relay while the input is active
• Flash Relay (Toggle) - Toggles flashing behavior ON and OFF

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N-Button Software

Using A/D Inputs with N-Button

N-Button Lite and Pro support powerful A/D Input Automation rules that allow you to automatically control relays based on analog input levels. Simply define a voltage threshold or range, and N-Button will energize or de-energize relays as conditions change.

N-Button also supports Send Email and Text Message actions (Push Notifications), enabling automatic alerts when an A/D input reaches a specific level or falls within a defined range. Relay control and notifications can work together seamlessly, all driven by live A/D input data.

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Works Seamlessly with N-Button Software

Each A/D channel supports industry-standard 0-5V inputs, making it simple to integrate a wide range of sensors without extra hardware. Using N-Button, you can:

• Build desktop meters that show real-time sensor data
• Create dashboards with multiple sensor feeds
• Trigger Push Notification alerts from A/D thresholds
• Control relays based on sensor conditions - no programming required

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Using the Input Information

N-Button allows you to use A/D input values in multiple ways without writing code. Numeric values or value ranges can be used to:

• Trigger text or email alerts when thresholds are exceeded
• Control individual relays or banks of relays
• Display live readings on customizable desktop meters

For example, when an input value rises above 125, a relay can automatically energize or a notification can be sent. You can also define a valid operating range where a relay remains on, and automatically turns off if the value moves above or below that range.

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Control Relays with A/D Inputs

N-Button Lite/Pro software makes it incredibly easy to automate relay control using A/D input levels from this board. Simply create an Automation rule that links any A/D input channel to any relay channel. When the input voltage reaches the threshold you define, the relay energizes (turns on). When the input drops below that threshold, the relay de-energizes (turns off). No programming required.

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Precision + Performance

High-resolution readings ensure accurate measurements, even in demanding environments. Stream live data or automate actions based on your input thresholds.

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Create Desktop Meters

N-Button software lets you build live desktop meters that display real-time readings from the AD8 inputs, giving you constant visibility of your sensor data right on your screen. In the example shown, a "Live Soil Moisture Reading" meter provides instant feedback on soil conditions. Right below the meter, Relay 1 and Relay 2 buttons allow you to manually control relays directly from your desktop, or see their current status at a glance - the buttons change color to indicate whether a relay is on or off, giving you a complete view of your system in real time.

Each meter can be individually labeled, like the "Soil Moisture" label shown, making it easy to identify each sensor at a glance. Meter increments are fully customizable - the "Customizable Increments" callout shows how you can adjust the scale to match your application, whether you need fine-grained precision or a broader overview.

N-Button also allows you to arrange multiple meters on your desktop, creating a personalized dashboard that updates in real time. This makes it simple to compare different sensors side by side, spot trends, and react quickly if readings go outside expected ranges (unless you have the relays set automatically). Whether you're monitoring a single sensor or a full set of eight, N-Button makes live data monitoring intuitive and actionable.

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Push Notification

N-Button software also includes a powerful point-and-click messaging system that sends alerts to the recipients you choose. Because N-Button runs on your PC, it can automatically deliver text messages and/or emails directly from your computer.

Send SMS and email alerts when voltage levels are reached. Customize the subject and message to identify exactly what triggered the alert. You can even set repeat notifications at a defined interval until the input level returns to normal.
Visit our N-Button Page

N-Button Lite - Full Relay Control

Relay Software

N-Button Lite is third-party software (sold separately) that gives you full relay control and real-time A/D input monitoring without writing a single line of code. It may look simple at first glance, but don't let that fool you - this is a surprisingly powerful tool with a wide range of real-world applications.

Create desktop buttons and meters, monitor live input values, and control relays instantly - all from an intuitive point-and-click interface.

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Create Buttons & Widgets

N-Button Lite/Pro lets you build floating desktop widgets that can:

• Control relays and read inputss
• Create buttons to control relays
• Read A/D inputs
• Create live meters from inputs
• Launch applications

It supports Serial/USB and Network connections, and you can even access your widgets remotely. Most actions are point-and-click - no programming required.
N-Button also includes special widgets designed specifically for the boards on this site.

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Supports Up To 16 Widgets

N-Button Lite offers the same widget types as the Pro version but is limited to 16 total widgets - perfect for smaller setups or budget-friendly applications.
Need more? You can upgrade to N-Button Pro at any time.

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USB and Network Compatible

N-Button Lite works over Serial/USB or Network connections between your computer and the relay board. Add or modify widgets easily using N-Button Lite Manager to create the exact look and behavior you want. N-Button Lite supports this relay board and any ProXR Relay board with up to 16-widgets.

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Control Multiple Boards

N-Button Lite software can control multiple devices connected to the same computer or network, allowing you to manage relays, inputs, meters, and automation across several boards from a single interface. Use the built-in Device Manager to easily add, remove, or modify boards and maintain a clear list of all connected devices. Each device is handled independently, making it easy to build scalable systems without adding complexity.
For example, a single PC can monitor A/D inputs on one board while controlling relays on multiple network-connected boards.

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Relay Control

Create Relay Buttons

Relay Button Widgets are the heart of N-Button. They let you turn relays ON or OFF instantly from your desktop - no programming, no scripting, and no setup headaches. Using an intuitive point-and-click interface, you can create exactly the type of control you need in seconds.

Create:

• A simple ON button
• A simple OFF button
A toggle button (one click ON, next click OFF)

These buttons float on your desktop, giving you immediate control without opening a full application or writing a single line of code.

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Create Buttons That Show Status

Relay Status Widgets automatically reflect the live state of each relay. As shown in the example, buttons can change color based on whether a relay is ON or OFF, so a quick glance at your screen tells you exactly what's happening in real time.

This visual feedback reduces guesswork and makes it easy to monitor multiple relays at once - especially in systems where knowing the current state is just as important as controlling it.

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Create Custom Buttons

Custom Buttons give advanced users access to the full power of the ProXR Command Set, one of the most advanced relay command systems in the industry. With N-Button Lite, you can send any supported ProXR command with a single button press - all without needing to write or compile code.

Each button can be fully customized to match your workflow. Change the button color, shape, and label, and configure colors to automatically update based on relay status. In the example shown, different colors clearly indicate ON and OFF states, making relay control both intuitive and visually unmistakable.

Whether you need simple control, live status feedback, or advanced command execution, N-Button buttons give you fast, flexible, and reliable control right from your desktop.

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Using A/D Inputs with N-Button

A/D Inputs

All ProXR Lite boards and ProXR boards that begin with ZADR or ZADSR include an onboard 8-channel Analog-to-Digital converter in addition to relay control. Each channel accepts a 0-5V DC input and converts it into a numeric value for processing.

Using the AD8 Command Set, analog voltages are translated into digital values (8- or 10-bit resolution, depending on configuration), making it easy to monitor and act on sensor data from a wide range of devices.

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Control Relays Based on Analog Input Levels

N-Button Lite and Pro support powerful A/D Input Automation rules that allow you to automatically control relays based on analog input levels. Simply define a voltage threshold or range, and N-Button will energize or de-energize relays as conditions change.

N-Button also supports Send Email and Text Message actions (Push Notifications), enabling automatic alerts when an A/D input reaches a specific level or falls within a defined range. Relay control and notifications can work together seamlessly, all driven by live A/D input data.

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Works Seamlessly with N-Button Software

Each A/D channel supports industry-standard 0-5V inputs, making it simple to integrate a wide range of sensors without extra hardware. Using N-Button, you can:

• Build desktop meters that show real-time sensor data
• Create dashboards with multiple sensor feeds
• Trigger Push Notification alerts from A/D thresholds
• Control relays based on sensor conditions - no programming required

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Using the Input Information

N-Button allows you to use A/D input values in multiple ways without writing code. Numeric values or value ranges can be used to:

• Trigger text or email alerts when thresholds are exceeded
• Control individual relays or banks of relays
• Display live readings on customizable desktop meters

For example, when an input value rises above 125, a relay can automatically energize or a notification can be sent. You can also define a valid operating range where a relay remains on, and automatically turns off if the value moves above or below that range.

---

Control Relays with A/D Inputs

N-Button Lite/Pro software makes it incredibly easy to automate relay control using A/D input levels from this board. Simply create an Automation rule that links any A/D input channel to any relay channel. When the input voltage reaches the threshold you define, the relay energizes (turns on). When the input drops below that threshold, the relay de-energizes (turns off). No programming required.

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Precision + Performance

High-resolution readings ensure accurate measurements, even in demanding environments. Stream live data or automate actions based on your input thresholds.

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Create Desktop Meters

N-Button software lets you build live desktop meters that display real-time readings from the AD8 inputs, giving you constant visibility of your sensor data right on your screen. In the example shown, a "Live Soil Moisture Reading" meter provides instant feedback on soil conditions. Right below the meter, Relay 1 and Relay 2 buttons allow you to manually control relays directly from your desktop, or see their current status at a glance - the buttons change color to indicate whether a relay is on or off, giving you a complete view of your system in real time.

Each meter can be individually labeled, like the "Soil Moisture" label shown, making it easy to identify each sensor at a glance. Meter increments are fully customizable - the "Customizable Increments" callout shows how you can adjust the scale to match your application, whether you need fine-grained precision or a broader overview.

N-Button also allows you to arrange multiple meters on your desktop, creating a personalized dashboard that updates in real time. This makes it simple to compare different sensors side by side, spot trends, and react quickly if readings go outside expected ranges (unless you have the relays set automatically). Whether you're monitoring a single sensor or a full set of eight, N-Button makes live data monitoring intuitive and actionable.

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Push Notification

N-Button software also includes a powerful point-and-click messaging system that sends alerts to the recipients you choose. Because N-Button runs on your PC, it can automatically deliver text messages and/or emails directly from your computer.

Send SMS and email alerts when voltage levels are reached. Customize the subject and message to identify exactly what triggered the alert. You can even set repeat notifications at a defined interval until the input level returns to normal.

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Control More Than Just Relay Boards

Your widgets aren't limited to relay boards. You can configure buttons to:

• Send custom serial/IP data
• Open files, folders, or programs
• Launch applications
• Send HTTP requests
• Trigger data lists

Click a button, and N-Button sends the command where it needs to go.

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Accessories

Base Station Software

Compatible with All Boards on this Site

Base Station is a free software download that works by talking directly to your controller to identify the model, then automatically loads the correct graphical interface for controlling and testing that device. It's a great way to learn how any NCD controller works and doubles as a powerful diagnostic tool to verify your device is operating as designed.

Base Station exercises every supported feature on every supported device. For learning, testing, and troubleshooting NCD boards, this is the ultimate reference tool.

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User Interface

Base Station gives you a list of command sets supported by your controller. Just click any item once to open the custom graphical interface that was created alongside the firmware. Each command set corresponds with a module installed inside your device."

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Device Identification

Click the Device Identification window to view important read-only info about your controller.

Watch for the field labeled "Documentation Related to this Controller" - it's a complete list of articles connected to your device. Click any entry to open it. (Internet required.)

All devices released in 2012 and later support Device Identification.

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Device Command Sets

Base Station asks the controller which command sets it supports, then displays them when the software launches. Some devices show more command sets, others fewer - it's always based on the board.

ProXR users can access the entire ProXR Command Set to turn relays on/off and run every available function.

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Control All ProXR Functions

Turn relays on or off, read relay status, monitor inputs - Base Station gives full ProXR control through a clean point-and-click interface.

For programmers, Base Station also shows every command being sent to the board, making it a great tool for learning and development.

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Useful Features

There are some useful features to look for when using Base Station Software to control, test, or configure your device:

• Links to Quick Start Guides and documentation
• Discovery of network devices with IP address display
• Command Set Window for viewing raw commands (especially helpful for ProXR users)
• Relay Activator with Analog Inputs

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Relay Activator

Relay Activator and Analog Inputs

Base Station Software's Relay Activator is ideal for applications that primarily rely on computer control but still require occasional manual operation. By connecting external buttons or switches, you can take direct, hands-on control of any relay without giving up software-based control.

This creates true bi-directional control. For example, a relay can be turned ON through the computer interface and later turned OFF using a physical switch - or vice versa. Whether you're testing, troubleshooting, or building a hybrid manual/software-controlled system, Relay Activator keeps everything synchronized and predictable.

As shown in the example, each input includes a pull-down menu that allows you to select exactly how that input will control a relay. This makes configuration fast and intuitive - simply choose the desired action for each input without writing any code.

Each of the 8 input channels can be configured to control relays 1 through 8, with multiple action types available. This flexibility allows every input to perform exactly the function your application requires.

Available Relay Actions per Input
Each input can be assigned one of the following actions:

• Momentary Control - Activates the relay only while the input is engaged
• Toggle Relay State - Alternates the relay between ON and OFF
• Turn Relay ON - Forces the relay into the ON state
• Turn Relay OFF - Forces the relay into the OFF state
• Flash Relay (Momentary) - Pulses the relay while the input is active
• Flash Relay (Toggle) - Toggles flashing behavior ON and OFF

This level of control makes Relay Activator perfect for operator panels, test benches, safety overrides, and any application where manual interaction and software automation need to work together seamlessly.
AD8 Relay Activator Quick Start Guide.

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Reactor Users

Reactor Events Settings

All Reactor configuration is handled inside Base Station.

You can define when a relay or event activates based on the voltage readings of analog inputs. Inputs can trigger relays directly or trigger timed events.

The Reactor GUI only appears when Base Station detects a Reactor board, and some functions may not display for other board types.

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TaraList Users

TaraList Setup

Base Station includes configuration tools and scheduling upload controls for TaraList Time Activated Boards.

TaraList users will see setup pages for creating and uploading time schedules. ProXR users won't - those pages appear only when Base Station detects a TaraList controller.

Data Sheets & Quick Start Guides

Below are the Data Sheets Quick Start Guides for this board.  These are the guides that will help you communicate and configure this board.