National Control Devices, LLC

World's Largest Manufacturer of Computer Controlled Switching Devices Since 1995.
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24 Channel RS232 Relay

Serial Relay RS-232 Relay Board

Powerful Command Set...Lots of Features

It is one thing to build an RS232 Relay Controller with a powerful command set and lots of features.  We have been doing that for years.  It becomes an entirely different breed of controller when the relay controller is capable of watching over your computer when things don't always go as planned.  All our 24 Channel RS232 Relay Controllers are part of the ProXR Serial line of controllers.  This means not only can will you find the Relay Controller that you need but it will have the ability to expand with your needs.

RS232 Switching with a Serial Port

RS232 Relay or Serial Relay Controllers allow computer controlled switching using the Serial port of your computer.  Select NCD Serial Relay Drivers support 8-Channels of 8-Bit / 10-Bit Analog to Digital Conversion (A/D), and include an XR Relay Expansion Port for adding additional relays to the RS232 Relay Controller Board.

Supports any COM Port

An RS232 Relay supports any available COM port at any standard baud rate, allowing easy integration into any program that support serial communications. The RS232 Relay is ideally suited for applications that require data collection and control from a single device. Built-in temperature sensor allows temperature monitoring, analog to digital conversion, and relay control from a single device. RS-232 interface supports baud rates up to 115.2K Baud.

Easy Connection with the Quick Start Kit

The video shows how easy it is to connect an RS232 Relay to the computer with the optional Quick Start Kit.  The R45Pro Quad Relay Controller is shown connected to the optional QS12 Quick Start Kit.

24-Channel RS-232 Relay Boards

R241DPDTPROXR
24-Channel 1A DPDT RS-232 Latching Relay Board with XR Expansion Port
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$393.00
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R243DPDTPROXR
24-Channel 3A DPDT RS-232 Latching Relay Board with XR Expansion Port
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$453.00
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R245DPDTPROXR
24-Channel 5A DPDT RS-232 Latching Relay Board with XR Expansion Port
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$513.00
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R245PROXR
24-Channel 5A SPDT RS-232 Latching Relay Board with XR Expansion Port
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$354.00
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R2410PROXR
24-Channel 10A SPDT RS-232 Latching Relay Board with XR Expansion Port
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$414.00
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R121DPDTR125PROXR
12-Channel 1A DPDT Relay + 12-Channel 5A SPDT RS-232 Relay Board
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$386.00
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R121DPDTR1210PROXR
12-Channel 1A DPDT Relay + 12-Channel 10A SPDT RS-232 Relay Board
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$416.00
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R123DPDTR125PROXR
12-Channel 3A DPDT Relay + 12-Channel 5A SPDT RS-232 Relay Board
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$416.00
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R123DPDTR1210PROXR
12-Channel 3A DPDT Relay + 12-Channel 10A SPDT RS-232 Relay Board
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$446.00
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R125DPDTR125PROXR
12-Channel 5A DPDT Relay + 12-Channel 5A SPDT RS-232 Relay Board
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$446.00
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R125DPDTR1210PROXR
12-Channel 5A DPDT Relay + 12-Channel 10A SPDT RS-232 Relay Board
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$476.00
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Customer Support
About National Control Devices
Tools and Resources
National Control Devices, LLC

PO Box 455 - Osceola - MO - 64776
Phone: 417.646.5644 - Fax: 866.562.0406
Open 9AM-4PM Central Standard Time
http://www.relaycontrollers.com/