The R25PL_USB is equipped with firmware built into the board that will allow you to send commands to the board to
energize the relay on the board. The USB interface will allow you to connect the board to the USB port on your computer.
The board will mount as a virtual COM port.
R25PL_USB The Ideal Choice
The R25PL_USB USB Relay allows you to program in almost any language and has the ProXR Command Set, the industry leading
command set for sending commands to control relays and read the inputs on the board.
2 5-Amp Relay Installed
- Single Pole Double Throw (SPDT) Relay
- Highly reliable Under Almost any Conditions
- Temperature Rating -40° C to 85° C
Onboard USB Interface Module
- Plugs Directly into USB Port
- Mounts as a Virtual COM Port
Industry Leading Command Set
- Send Specific Commands to Trigger Relays
- Trigger Any or All Relays
- Program in Almost any Language
- Read 0 to 5 Volt Sensors
Mounts as a COM Port
This ProXR series controller connects to the USB port of your computer and will mount as a COM port on your PC. Once powered up, the controller waits for a command. A command consists of a few bytes of data in numerical format usually between 2 and 6 bytes. Once the command has been received, the controller processes the command, and sends you back ASCII character code 85 to signal the completion of your command.
This board is equipped with a ZUSB Module. The ZUSB communications module adds USB communications to the board. The ZUSB module is powered from the USB port of your computer and includes a 6' USB Cable. The board itself will require 12 volts of power and can be hard wired or you can purchase a "wall wart" type Power Supply at checkout.
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 controller requires the use of induction suppression capacitors. 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 electrically interferes with the microprocessor logic of our controllers, causing relay banks to shut themselves down unexpectedly. In the case of USB devices, customers may experience loss of communications until the device is reconnected to the USB port. Capacitors that we offer are available at checkout, for more information view our Induction Suppression Video.
Even with capacitors in place, the possibility does exist that capacitors will not suppress enough induction to prevent periodic communications loss. Testing is required in these applications. If problems persist, other communications mechanisms must be considered. If USB is required, an RS-232 communications module will allow RS-232 communications between your PC and controller with no complications. A USB to RS-232 adapter can be used in combination with the RS-232 controller. The RS-232 communications format effectively blocks induction to safe levels for a USB to RS-232 adapter to function without errors (look for "RS232 Relays" under Shop by Interface on the left navigation). If the problem persists after you purchase a USB board you can change out the USB module for an RS-232 or wireless module easily.
USB Relay Videos
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!
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.
Full ProXR Enhanced Firmware Installed
This board has ProXR Firmware installed that responds to the full ProXR Command Set - it's just not expandable. The ProXR Firmware is the industry leading firmware for controlling relays with more commands and functionality than any other board on the market. The list of commands and parameters this board is capable of is extensive. ProXR Enhanced firmware has more commands, more functionality and better control than any other manufacturer! For a detailed list of all the commands with descriptions see our ProXR Enhanced Command Set.
Read Analog Sensors
We did NOT skip the Analog Input portion of the ProXR Lite. 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! A/D inputs are ideal for reading the on/off status of switches. Simply position the Up/Down jumper in the UP Position and connect a switch between input and ground, software may then be used to monitor the contact closure status of your switch. AD inputs can also be used for reading variable resistance signals. Position of Up/Down jumper should also be in UP position for reading variable resistance signals. The board will then will return a value between 0-255.
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 over 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.
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 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.
Break-A-Way Tabs for a Smaller Design
The ProXR Lite relays have a great feature where space is a premium - Break-A-Way Tabs. The Break-A-Way Tabs allow most boards to fit in an optional undrilled plastic enclosure. Snap off the Break-A-Way Tabs and you have a controller with a smaller profile when you need to fit in a tight space.
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.
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 firstname.lastname@example.org.
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
Surface mount allows for a smaller more reliable board
Break-A-Way Tabs lets you decide the board's size
Screw terminal or direct relay connections makes connecting to the board easy
Highly reliable relay with industry leading command set
ProXR Lite Limitations
This controller cannot be expanded
Easy Software Development
Most of our customers write their own program for controlling these devices and use almost any language to do this. This boards supports the Serial Port Profile, meaning they will mount to the computer as a virtual com port making it very easy to send commands to the device. This board will support almost any programming language you are comfortable with.
Power Supply Available
Reliable Power Means Reliable Switching
The PWR12 is regulated power supply providing clean power necessary for
the performance of these boards. 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 R/A barrel connector.
The SFL Enclosure is an undrilled, non-waterproof enclosure and is available at checkout for this controller.
Spec Sheet and Drawings:
an inductive load using our relay controllers requires the use of induction suppression capacitors. 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 electrically interferes with the microprocessor
logic of our controllers, causing relay banks to shut themselves down unexpectedly.
Lite is software that allows you to configure buttons to control relays and read the status of those relays without programming. You
can also create meters for reading variable input sensors connected to the board in real time!
Limited Time Offer!
Order the N-Button Lite with this controller and get it for the unbelievable discounted price of just $29.00!
For customers that don't want to do the programming themselves N-Button creates widgets or buttons to control up to eight relays without any programming knowledge. A new button will be created and placed on the desktop of your PC for each relay you want to control. N-Button supports Serial Port/ USB and Network connection between PC and relay board and can be installed on up to three computers.
Analog to Digital meters can also be added to your desktop to instantly read the status of any sensor connected to the board. Each meter is customizable and can be changed without any programming knowledge.
N-Button Lite has the same great features as N-Button Pro the difference is that N-Button Lite only supports 16 buttons/widgets. Purchase N-Button with this board for a discount.
Relay Timer Software Allows you control relays from a time schedule you create! The software can be installed on a server or PC and uses the computers time for and accurate relay control. Sync your shift change bells, school bells and more with such as time clocks by installing this software on the same computer! Easy interface makes timing control simple for everyone! Look for the Relay Timer at checkout.
Base Station Software
Base Station will assist you in learning how this device functions and is the ultimate reference tool for setting up, testing and controlling this device. Base Station software supports every feature of this device - no other controller manufacturer even comes close to offering this type of software. Base Station works by communicating with your controller to identify the model and provides the appropriate graphical user interface for setting up and testing the identified device. Download Base Station.
The NCD Component Library is a plug-in for the Visual Studio 2005/2008 that greatly simplifies the communications to the NCD product line.&nbp; The samples can be run in Visual Studio and fully customizable to your needs. Over 40 samples included with this free download. Download Now.
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.