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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8 Channel SPDT Relay

8 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 Eight 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.

8-Channel SPDT Relay Controller Boards

R85PRO
RS-232 8-Channel Relay Controller Board with 5 Amp Relays
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$139.00
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R810PRO
RS-232 8-Channel SPDT Relay Controller Board with 10 Amp Relays
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$159.00
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R820
RS-232 8-Channel 20-Amp SPDT High-Power Relay Controller Board
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$209.00
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IOADR85
Hybrid 8-Relay 5-Amp SPDT Controller Board with Integrated I/O + A/D
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$209.00
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IOADR810
Hybrid 8-Relay 10-Amp SPDT Controller Board with Integrated I/O + A/D
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$229.00
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IOADR820
Hybrid 8-Relay 20-Amp SPDT Controller Board with Integrated I/O + A/D
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$279.00
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XR85
Expansion Relay Controller Board with 8 5-Amp SPDT Relays
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$129.00
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XR810
Expansion Relay Controller Board with 8 10-Amp SPDT Relays
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$149.00
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XR820
8-Channel 20A SPDT Expansion Relay Controller
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$199.00
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XR820HP
Low Cost 8-Channel 20A SPDT Expansion Relay Controller
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$174.00
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UADR85PROXR
USB Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$186.00
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UADR810PROXR
USB Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$206.00
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ZADR85PROXR
802.15.4 Wireless Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$199.00
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ZADR810PROXR
802.15.4 Wireless Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$219.00
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ADR85PROXR
RS-232 Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$164.00
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ADR810PROXR
RS-232 Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$184.00
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BTADR85PROXR
Bluetooth Wireless Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$234.00
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BTADR810PROXR
Bluetooth Wireless Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$254.00
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FOADR85PROXR
Fiber Optic Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$224.00
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FOADR810PROXR
Fiber Optic Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$244.00
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ZADR85PROXR_XSC
XSC Long Range Wireless Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$244.00
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ZADR810PROXR_XSC
XSC Long Range Wireless Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$264.00
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ZADR810PROXR_ZBMESH
ZB ZigBee Relay Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$219.00
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ZADR85PROXR_ZBMESH
ZB ZigBee Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$199.00
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NEUXPR85PROXR
Ethernet 8-Channel 5-Amp SPDT Relay Controller + UXP Expansion Port
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$250.00
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NEUXPR810PROXR
Ethernet 8-Channel 10-Amp SPDT Relay Controller + UXP Expansion Port
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$270.00
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NEADR85PROXR
Ethernet 8-Channel 5-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$250.00
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NEADR810PROXR
Ethernet 8-Channel 10-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$270.00
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NWADR85PROXR
WiFi 802.11b 8-Channel 5-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$323.00
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NWADR810PROXR
WiFi 802.11b 8-Channel 10-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$343.00
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NWUXPR810PROXR
WiFi 802.11b 8-Channel 10-Amp SPDT Relay Controller + UXP Universal Expansion Port
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$343.00
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NWUXPR85PROXR
WiFi 802.11b 8-Channel 5-Amp SPDT Relay Controller + UXP Universal Expansion Port
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$323.00
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NEUXPR1610PROXR
Ethernet 16-Channel 10-Amp SPDT Relay Controller + UXP Exansion Port
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$453.00
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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/