National Control Devices

National Control Devices, LLC

World's Largest Manufacturer of Computer Controlled Switching Devices Since 1995.
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With our New Reactor Series Relay Controllers your application no longer has to be Computer Controlled.
No programming is required to configure the device using our free Configuration Utility. Simply set it up, install it, and leave it.
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32 Channel SPDT Relay

32 Channel SPDT Controller Board

SPDT Single Pole Double Throw Relay

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.

Large Selection

We offer a large selection of Thirty Two Channel SPDT Relay Boards for applications ranging from small signal switching to high voltage, high current applications.  If your looking for a 802.15.4 Wireless SPDT Relay, USB SPDT Relay or Bluetooth SPDT Relay we have the largest connection options around.

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 SPDT 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.

32-Channel SPDT Relay Controller Boards

R325PROXR
32-Channel 5A SPDT RS-232 Relay Controller with XR Expansion Port
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$449.00
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R3210PROXR
32-Channel 10A SPDT RS-232 Relay Controller with XR Expansion Port
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$529.00
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R165R16OCLP
16-Channel 5A SPDT Relay + 16-Channel 150ma O.C. Output RS-232 Relay Controller
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$298.00
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R1610R16OCLP
16-Channel 10A SPDT Relay + 16-Channel 150ma O.C. Output RS-232 Relay Controller
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$338.00
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R161DPDTR165PROXR
16-Channel 1A DPDT Relay + 16-Channel 5A SPDT RS-232 Relay Controller
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$511.00
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R161DPDTR1610PROXR
16-Channel 1A DPDT Relay + 16-Channel 10A SPDT RS-232 Relay Controller
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$551.00
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R163DPDTR165PROXR
16-Channel 3A DPDT Relay + 16-Channel 5A SPDT RS-232 Relay Controller
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$551.00
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R163DPDTR1610PROXR
16-Channel 3A DPDT Relay + 16-Channel 10A SPDT RS-232 Relay Controller
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$591.00
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R165DPDTR165PROXR
16-Channel 5A DPDT Relay + 16-Channel 5A SPDT RS-232 Relay Controller
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$591.00
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R165DPDTR1610PROXR
16-Channel 5A DPDT Relay + 16-Channel 10A SPDT RS-232 Relay Controller
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$631.00
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XR325
32-Channel 5A SPDT Expansion Relay Controller
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$399.00
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XR3210
32-Channel 10A SPDT Expansion Relay Controller
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$479.00
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NER325PROXR
Ethernet 32-Channel 5-Amp SPDT Relay Controller + 8-Channel A/D
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$603.00
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NER3210PROXR
Ethernet 32-Channel 10-Amp SPDT Relay Controller + 8-Channel A/D
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$683.00
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NWR325PROXR
WiFi 802.11b 32-Channel 5-Amp SPDT Relay Controller + 8-Channel A/D
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$673.00
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NWR3210PROXR
WiFi 802.11b 32-Channel 10-Amp SPDT Relay Controller + 8-Channel A/D
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$753.00
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ZADSR325PROXR
802.15.4 Wireless Relay Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$514.00
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ZADSR3210PROXR
802.15.4 Wireless Relay Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$594.00
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ZUXPSR325PROXR
802.15.4 Wireless Relay Controller Board 32-Channel 5 Amp SPDT + UXP Universal Expansion Port
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$514.00
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ZUXPSR3210PROXR
802.15.4 Wireless Relay Controller Board 32-Channel 10 Amp SPDT + UXP Universal Expansion Port
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$594.00
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UADSR325PROXR
USB Relay Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$506.00
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UADSR3210PROXR
USB Relay Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$586.00
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UXPSR325PROXR
USB Relay Controller 32-Channel 5 Amp SPDT + UXP Universal Expansion Port
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$506.00
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UXPSR3210PROXR
USB Relay Controller 32-Channel 10 Amp SPDT + UXP Universal Expansion Port
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$586.00
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ZADR3220PROXR
802.15.4 Wireless Relay Controller 32-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
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$923.00
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ZUXPR3220PROXR
802.15.4 Wireless Relay Controller 32-Channel 20 Amp SPDT + UXP Universal Expansion Port
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$923.00
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UADR3220PROXR
USB Relay Controller 32-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
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$915.00
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UXPR3220PROXR
USB Relay Controller 32-Channel 20 Amp SPDT + UXP Universal Expansion Port
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$915.00
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ZUXPSRR32-5DPSTPROXR
802.15.4 Wireless Reed Relay Controller 32-Channel .5A DPST + UXP Universal Expansion Port
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$749.00
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UADSRR32-5DPSTPROXR
USB Reed Relay Controller 32-Channel .5A DPST + 8-Channel 8/10-Bit A/D
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$741.00
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UXPSRR32-5DPSTPROXR
USB Reed Relay Controller 32-Channel .5A DPST + UXP Universal Expansion Port
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$741.00
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BTADSR325PROXR
Bluetooth Wireless Relay Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$549.00
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BTADSR3210PROXR
Bluetooth Wireless Relay Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$629.00
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BTUXPSR325PROXR
Bluetooth Wireless Relay Controller Board 32-Channel 5 Amp SPDT + UXP Universal Expansion Port
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$549.00
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BTUXPSR3210PROXR
Bluetooth Wireless Relay Controller Board 32-Channel 10 Amp SPDT + UXP Universal Expansion Port
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$629.00
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BTADR3220PROXR
Bluetooth Wireless Relay Controller 32-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
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$958.00
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BTUXPR3220PROXR
Bluetooth Wireless Relay Controller 32-Channel 20 Amp SPDT + UXP Universal Expansion Port
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$958.00
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BTADSRR32-5DPSTPROXR
Bluetooth Wireless Reed Relay Controller 32-Channel .5A DPST + 8-Channel 8/10-Bit A/D
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$784.00
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BTUXPSRR32-5DPSTPROXR
Bluetooth Wireless Reed Relay Controller 32-Channel .5A DPST + UXP Universal Expansion Port
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$784.00
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FOADSR325PROXR
Fiber Optic Relay Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$539.00
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FOADSR3210PROXR
Fiber Optic Relay Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$619.00
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FOADR3220PROXR
Fiber Optic Relay Controller 32-Channel 20 Amp SPDT + 8-Channel 8/10-Bit A/D
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$948.00
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FOUXPR1620PROXR
Fiber Optic Relay Controller 16-Channel 20 Amp SPDT + UXP Universal Expansion Port
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$579.00
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FOUXPR3220PROXR
Fiber Optic Relay Controller 32-Channel 20 Amp SPDT + UXP Universal Expansion Port
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$948.00
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FOADSRR32-5DPSTPROXR
Fiber Optic Reed Relay Controller 32-Channel .5A DPST + 8-Channel 8/10-Bit A/D
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$774.00
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FOUXPSRR32-5DPSTPROXR
Fiber Optic Reed Relay Controller 32-Channel .5A DPST + UXP Universal Expansion Port
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$774.00
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FOUXPSR325PROXR
Fiber Optic Relay Board 32-Channel 5 Amp SPDT + UXP Universal Expansion Port
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$539.00
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FOUXPSR3210PROXR
Fiber Optic Relay Board 32-Channel 10 Amp SPDT + UXP Universal Expansion Port
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$619.00
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ZADSR325PROXR_XSC
XSC Long Range Wireless Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$559.00
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ZADSR3210PROXR_XSC
XSC Long Range Wireless Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$639.00
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ZUXPSR325PROXR_XSC
XSC Long Range Wireless Controller 32-Channel 5 Amp SPDT + UXP Universal Expansion Port
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$559.00
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ZUXPSR3210PROXR_XSC
XSC Long Range Wireless Controller 32-Channel 10 Amp SPDT + UXP Universal Expansion Port
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$639.00
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ZADSR3210PROXR_ZBMESH
ZB ZigBee Relay Controller 32-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$594.00
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ZUXPSR3210PROXR_ZBMESH
ZB ZigBee Relay Controller Board 32-Channel 10 Amp SPDT + UXP Universal Expansion
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$594.00
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ZADSR325PROXR_ZBMESH
ZB ZigBee Relay Controller 32-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$514.00
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ZUXPSR325PROXR_ZBMESH
ZB ZigBee Relay Controller Board 32-Channel 5 Amp SPDT + UXP Universal Expansion
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$514.00
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ZUXPSRR32-5DPSTPROXR_ZBMESH
ZB ZigBee Reed Relay Controller 32-Channel .5A DPST + UXP Universal Expansion Port
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$749.00
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ZADSRR32-5DPSTPROXR_ZBMESH
ZB ZigBee Reed Relay Controller 32-Channel .5A DPST + 8-Channel 8/10-Bit A/D
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$749.00
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NEUXPR3210PROXR
Ethernet 32-Channel 10-Amp SPDT Relay Controller + UXP Expansion Port
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$683.00
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NEUXPR325PROXR
Ethernet 32-Channel 5-Amp SPDT Relay Controller + UXP Expansion Port
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$603.00
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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.controlanything.com/