National Control Devices, LLC

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

24 Relay DPDT Control Board

The PC Switch for Computer Controlled Switching

NCD Relay Controllers Offer Computer Controlled using a simple interface to your computer.  Integrate one of our PC switch controllers to turn external devices on or off with just a few simple software commands.  Using a PC Relay, computer controlled switching has never been easier.  Use any programming language you want to talk to our line of PC Relay controllers.  All our controller needs are a few simple bytes of data, so its easy to integrate into VB4, VB5, VB6, Visual Studio 2005, Visual Studio 2008.  Programming Examples are Provided on the Product Description pages below for Visual Basic 6.

Wireless or Hardwired PC Switching Solutions

Most NCD Devices are available in Wireless and Wired configurations.  Activate a Remote Switch from your PC with minimal effort.  Remote PC Control has never been easier.  For more detailed information and to order, please click on the links below.

Latest Advancements

Look for our ProXR series controllers for the latest advancements in signal switching!  The ProXR Series is capable of controlling up to 256 relays.  Control one relay at a time or all 256 relays at once with manual and automatic refreshing command set!  With our DPDT signal switching, the ProXR Series are built from the ground up with Expansion in mind.  Simply Chain the XR Expansion Modules, one after another, to meet your computer controlled switching requirements.  Your system will grow as your needs grow by simply plugging in modules as needed.  All boards in the ProXR Series will have the ProXR suffix in the part number.    For more detailed information and to order, please click on the links below.

24-Channel DPDT Relay Boards

R241DPDTPROXR
24-Channel 1A DPDT RS-232 Latching Relay Board with XR Expansion Port
$393.00
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R243DPDTPROXR
24-Channel 3A DPDT RS-232 Latching Relay Board with XR Expansion Port
$453.00
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R245DPDTPROXR
24-Channel 5A DPDT RS-232 Latching Relay Board with XR Expansion Port
$513.00
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R121DPDTR125PROXR
12-Channel 1A DPDT Relay + 12-Channel 5A SPDT RS-232 Relay Board
$386.00
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R121DPDTR1210PROXR
12-Channel 1A DPDT Relay + 12-Channel 10A SPDT RS-232 Relay Board
$416.00
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R123DPDTR125PROXR
12-Channel 3A DPDT Relay + 12-Channel 5A SPDT RS-232 Relay Board
$416.00
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R123DPDTR1210PROXR
12-Channel 3A DPDT Relay + 12-Channel 10A SPDT RS-232 Relay Board
$446.00
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R125DPDTR125PROXR
12-Channel 5A DPDT Relay + 12-Channel 5A SPDT RS-232 Relay Board
$446.00
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R125DPDTR1210PROXR
12-Channel 5A DPDT Relay + 12-Channel 10A SPDT RS-232 Relay Board
$476.00
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ZUXPSR241DPDTPROXR
802.15.4 Wireless Relay Controller Board 24-Channel 1 Amp DPDT + UXP Universal Expansion Port
$458.00
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ZUXPSR243DPDTPROXR
802.15.4 Wireless Relay Controller Board 24-Channel 3 Amp DPDT + UXP Universal Expansion Port
$518.00
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ZUXPSR245DPDTPROXR
802.15.4 Wireless Relay Controller Board 24-Channel 5 Amp DPDT + UXP Universal Expansion Port
$578.00
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UADSR241DPDTPROXR
USB Relay Controller 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
$450.00
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UADSR243DPDTPROXR
USB Relay Controller 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
$510.00
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UADSR245DPDTPROXR
USB Relay Controller 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
$570.00
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UXPSR241DPDTPROXR
USB Relay Controller 24-Channel 1 Amp DPDT + UXP Universal Expansion Port
$450.00
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UXPSR243DPDTPROXR
USB Relay Controller 24-Channel 3 Amp DPDT + UXP Universal Expansion Port
$510.00
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UXPSR245DPDTPROXR
USB Relay Controller 24-Channel 5 Amp DPDT + UXP Universal Expansion Port
$570.00
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BTADSR241DPDTPROXR
Bluetooth Relay Board 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
$493.00
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BTADSR243DPDTPROXR
Bluetooth Relay Board 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
$553.00
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BTADSR245DPDTPROXR
Bluetooth Relay Board 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
$613.00
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BTUXPSR241DPDTPROXR
Bluetooth Relay Controller Board 24-Channel 1 Amp DPDT + UXP Universal Expansion Port
$493.00
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BTUXPSR243DPDTPROXR
Bluetooth Relay Controller Board 24-Channel 3 Amp DPDT + UXP Universal Expansion Port
$553.00
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BTUXPSR245DPDTPROXR
Bluetooth Relay Controller Board 24-Channel 5 Amp DPDT + UXP Universal Expansion Port
$613.00
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FOADSR241DPDTPROXR
Fiber Optic Relay Board 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
$483.00
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FOADSR243DPDTPROXR
Fiber Optic Relay Board 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
$543.00
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FOADSR245DPDTPROXR
Fiber Optic Relay Board 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
$603.00
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FOUXPSR241DPDTPROXR
Fiber Optic Controller Board 24-Channel 1 Amp DPDT + UXP Universal Expansion Port
$483.00
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FOUXPSR243DPDTPROXR
Fiber Optic Controller Board 24-Channel 3 Amp DPDT + UXP Universal Expansion Port
$543.00
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FOUXPSR245DPDTPROXR
Fiber Optic Controller Board 24-Channel 5 Amp DPDT + UXP Universal Expansion Port
$603.00
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ZADSR241DPDTPROXR
802.15.4 Wireless Relay Board 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
$458.00
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ZADSR241DPDTPROXR_XSC
XSC Long Range Wireless Controller 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
$538.00
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ZADSR241DPDTPROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Board 24-Channel 1 Amp DPDT + 8-Channel 8/10-Bit A/D
$458.00
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ZADSR243DPDTPROXR
802.15.4 Wireless Relay Board 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
$518.00
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ZADSR243DPDTPROXR_XSC
XSC Long Range Wireless Controller 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
$598.00
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ZADSR243DPDTPROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Board 24-Channel 3 Amp DPDT + 8-Channel 8/10-Bit A/D
$518.00
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ZADSR245DPDTPROXR
802.15.4 Wireless Relay Board 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
$578.00
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ZADSR245DPDTPROXR_XSC
XSC Long Range Wireless Controller 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
$658.00
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ZADSR245DPDTPROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Board 24-Channel 5 Amp DPDT + 8-Channel 8/10-Bit A/D
$578.00
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ZUXPSR241DPDTPROXR_XSC
XSC Long Range Wireless Controller 24-Channel 1 Amp DPDT + UXP Universal Expansion Port
$538.00
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ZUXPSR241DPDTPROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Controller Board 24-Channel 1 Amp DPDT + UXP Universal Expansion P
$458.00
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ZUXPSR243DPDTPROXR_XSC
XSC Long Range Wireless Controller 24-Channel 3 Amp DPDT + UXP Universal Expansion Port
$598.00
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ZUXPSR243DPDTPROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Controller Board 24-Channel 3 Amp DPDT + UXP Universal Expansion P
$518.00
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ZUXPSR245DPDTPROXR_XSC
XSC Long Range Wireless Controller 24-Channel 5 Amp DPDT + UXP Universal Expansion Port
$658.00
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ZUXPSR245DPDTPROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Controller Board 24-Channel 5 Amp DPDT + UXP Universal Expansion P
$578.00
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About National Control Devices
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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/