24-Channel 1-AMP DPDT Relay Board ~~Refurbished~~
RPBZADSR241DPDTPROXR$379.00
Normally: $516.00

24-Channel 1-Amp DPDT Refurbished Board
The RPBZADSR241DPDTPROXR is a refurbished board that is backed by our normal 30-day return policy. Each board has completed the normal testing process before being released to us for sale and are 100% functional in every way and have the current ProXR firmware installed.Add the Interface of Your Choice
The price listed for the RPBZADSR241DPDTPROXR does not include a communication interface. The interface is how you will communicate to the board. There are 12 different interfaces available and you can choose any of these that fit your application for an added cost.
24-Channel 1-AMP DPDT Relay Board ~~Refurbished~~
RPBZADSR241DPDTPROXR$379.00
Normally: $516.00
24-Channel Refurbished at a Glance
- B-Stock Board
- Fully Tested and Working Board
- Non-Exchangeable
- Returnable Within 30-Days - 24 1-Amp Relays Installed
- Double Pole Double Throw (DPDT) Relay
- Highly reliable Under Almost any Conditions
- Temperature Rating -40° C to 85° C
- Expandable up to 256 Relays - 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
Interface Options
Interfaces are not included with this board. An interface is how you will communicate to the board. This board is controlled by sending commands to the board through a computer (except for a key fob module which will send commands using a key fob). Without one of the interfaces below there will be no way to communicate to the board. Below are the interface options available.ZRS-B Module

- External DB9 Connection
- Reliable RS-232 Serial Communication
- Supports Serial to USB Adapters
- Resistant to Induction
USB Module

- 3-Wire Screw Terminal
- Reliable RS-232 Serial Communication
- Supports Serial to USB Adapters
- Resistant to Induction
Ethernet Module

- Virtual COM Port over Ethernet
- Plugs Directly into Router
- Supports DHCP
- Supports Fixed IP Address/li>
Web-i Module

- Built-In Working Web Pages
- Use Any Browser for Relay Control
- Plugs Directly into Router
- Supports DHCP & Static IP
Key Fob Module

- Programmable Key Fob
- Distance 750 to 1000 Feet
- Pair up to 40 Key Fobs Per Board
- Pair Key Fob to Multiple Boards
- For Use on Boards up to 8 Relays Only
802.15.4 Internal Module

- Reliable 300' Wireless Range
- Internal Integrated Antenna
- Includes 802.15.4 Modem
- Line-Of-Site Operation
802.15.4 External Module

- Reliable 1-Mile Wireless Range
- External Antenna
- Includes 802.15.4 Modem
- Line-Of-Site Operation
Bluetooth Internal Module

- 200 Ft. Wireless Range
- Internal Antenna
- Pair with Android Phone or Tablet
- Free Android App Available
Bluetooth External Module

- 300 Ft. Wireless Range
- External Antenna
- Mounts as a Virtual COM Port on PC/Laptop
- Pair with Android Phone or Tablet
- Free Android App Available
Wi-Fi Internal Module

- Internal Antennas
- Supports DHCP & Direct TCP/IP
- Supports Fixed IP Address
- Password Protection
- Includes Network Configuration Kit
Wi-Fi External Module

- Internal Antennas
- Supports DHCP & Direct TCP/IP
- Supports Fixed IP Address
- Password Protection
- Includes Network Configuration Kit
900 MHz Module

- Reliable 2-Mile Standard Module
- 15 Mile Upgrade Available
- Includes XSC Modem
- Modem Mounts as a Virtual COM Port
Refurbished Boards

Interface Options
This board may not have a communication Interface installed and you have the ability to select the interface you would like at checkout. The interface must be selected of you will not be able to communicate to the board.Limited Quantities
There are most likely limited quantities of this board available. We do offer quantity pricing on our boards and can offer this if there is sufficient quantities available.Easy Software Development
Most of our customers write their own program for controlling these devices. 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 device.Plug-In for Visual Studio
The NCD Component Library is a plug-in for the Visual Studio 2005/2008 that greatly simplifies the communications to the NCD product line. The samples can be run in Visual Studio and full customization to your needs. Over 40 samples included with this free download! Component Library.Base Station Software

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 MoreRead Analog Sensors
This ProXR controller offers 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!ProXR Enhanced Firmware Installed
This board has ProXR Firmware installed that responds to the full ProXR Command Set. 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 is the newly released enhance version of the ProXR Firmware with more commands, more functionality and better control than ever before! For a detailed list of all the commands with descriptions see our ProXR Enhanced Command Set.DPDT Relays Installed


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.RoHS Compliant

Add Relays as Your Needs Grow
The ProXR series controllers are expandable up to 256 total relays. The controller is fitted with an XR Expansion Port where you can add expansion boards to this relay. Expansion boards can be added until you reach 256 total relays. The Expansion Boards get their logic from the main board and will require 12 VDC power. Expansion boards do not need to be the same relay amperage as the main board or other expansion boards.16 User-Programmable Timers
The ProXR Series controllers have 16 user-programmable timers. Each independent timer can be assigned to any relay, and can be programmed to hold the relay in the On state, or to pulse the relay at the end of the timer. The ProXR timing features are ideally suited for Watchdog, Keep Alive, and Server Reboot applications, as well as sprinkler systems, gate openers, and lighting applications. Relay Timing Features support two modes of operation: Duration and Pulse. Duration timing is ideally suited where a device should be activated for a period of time. Pulse timing mode is designed specifically for server reboot applications, whereby, if the timer is not reset periodically by your software, the timer will run out and reboot your computer.5-Year Warranty/Money Back Guarantee
ProXR Lite series controllers are guaranteed against manufacturing and functionality defects for a full 5 years! 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.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 Control 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
- "Wall Wart" or direct power capability
- Relay status light bar
- XR Expansion Port - easily add more relays
- Easy screw terminal connections
- DPDT Relays with 2 connections per relay
- ProXR Features
- Works with the full ProXR Enhanced Command Set
- 8-Channel 8/10-Bit Analog to Digital Converter
- Highly reliable relay with industry leading command set
- 16 programmable timers available
ProXR Videos
Power Supply Available

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.
Induction Suppression

N-Button Lite
