National Control Devices, LLC

World's Largest Manufacturer of Computer Controlled Switching Devices Since 1995.
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8 Channel Relay Controller Board

Low-Cost 8 Relay Control Board

Powerful Commands

Our 8 Channel Relay Controller offers a powerful command set allowing computer control of several external devices using only a few short commands. Our new and improved command set allows you to set the status of all relays at once or one relay at a time.  We offer a large selection of Eight Relay Drivers for applications ranging from low power signal switching to high voltage, high current applications.

Configurations To Fit Every Need

If your looking for an eight channel relay controller we have a configuration to fit every need.  RS-232 Serial 8-Relay Controllers offer a powerful command set allowing computer control of several external devices using only a few short commands.  Our Hybrid Serial 8-Relay drivers integrate sophisticated data acquisition and control using a powerful, yet simplified command set.  Our 8 Channel USB Relay interface mounts as a virtual COM port for easy programming across all major operating systems, ensuring compatibility with all programming languages that support serial connections.  And if your looking for wireless, our 8 Channel 802.15.4 Wireless Relay couldn't be easier!  A 802.15.4 Wireless relay controller offers wireless communications with no special software!

Latest Advancements

Look for our ProXR series controllers for the latest advancements in signal switching!  Available in USB Relay, 802.15.4 Wireless Relay and RS-232 Relay configurations, the ProXR Series is capable of controlling up to 256 relays.  Whether you need power switching or 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. For more detailed information and to order, please click on the links below.

8-Channel Relay Boards

R85PRO
RS-232 8-Channel Relay Driver Board with 5 Amp Relays
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$139.00
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R810PRO
Professional RS-232 8-Channel Relay Driver Board with 10 Amp Relays
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$159.00
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R81DPDT
8-Channel 1-Amp DPDT Small Signal Latching Relay Board
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$119.00
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R83DPDT
8-Channel 3-Amp DPDT Signal Latching Relay Board
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$139.00
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R85DPDT
8-Channel 5-Amp DPDT High-Current Signal Latching Relay Board
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$159.00
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R820
8-Channel 20-Amp SPDT High-Power Latching Relay Board
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$209.00
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R830
8-Channel 30-Amp SPST High-Power Latching Relay Board
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$249.00
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IOADR85
Hybrid 8-Channel 5-Amp SPDT Latching Relay Board with Integrated I/O + A/D
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$209.00
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IOADR810
Hybrid 8-Channel 10-Amp SPDT Latching Relay Board with Integrated I/O + A/D
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$229.00
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IOADR820
Hybrid 8-Channel 20-Amp SPDT Latching Relay Board with Integrated I/O + A/D
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$279.00
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IOADR830
Hybrid 8-Channel 30-Amp SPST Latching Relay Board with Integrated I/O + A/D
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$319.00
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SSR82AC
RS-232 8-Channel 2-Amp AC SPST Solid-State Latching Relay Board
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$129.00
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PWM81
RS-232 8-Channel 1-Amp Speed Controller/Light Dimmer Board
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$99.00
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PWM83
RS-232 8-Channel 3-Amp Speed Controller/Light Dimmer Board
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$119.00
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PWM85
RS-232 8-Channel 5-Amp Speed Controller/Light Dimmer Board
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$134.00
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F81
RS-232 8-Channel 1-Amp N-Channel FET Latching Relay Board
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$99.00
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F83
RS-232 8-Channel 3-Amp N-Channel FET Latching Relay Board
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$119.00
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F85
RS-232 8-Channel 5-Amp N-Channel FET Latching Relay Board
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$134.00
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UADR85PROXR
USB Latching Relay Board 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$186.00
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UADR810PROXR
USB Latching Relay Board 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$206.00
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ADR85PROXR
RS-232 Latching Relay Board 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 Latching Relay Board 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$184.00
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BTADR85PROXR
Bluetooth 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 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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R81DPDTCNRS
8-Channel 1-Amp DPDT Relay Controller with RS-232 and Relay Interface
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$149.00
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R83DPDTCNRS
8-Channel 3-Amp DPDT Relay Controller with RS-232 and Relay Interface
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$169.00
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R85DPDTCNRS
8-Channel 5-Amp DPDT Relay Controller with RS-232 and Relay Interface
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$189.00
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R81DPDTCN
8-Channel 1-Amp DPDT RS-232 Relay Controller with Relay Interface
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$139.00
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R83DPDTCN
8-Channel 3-Amp DPDT RS-232 Relay Controller with Relay Interface
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$159.00
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R85DPDTCN
8-Channel 5-Amp DPDT RS-232 Relay Controller with Relay Interface
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$179.00
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ADSSR8xPROXR
RS-232 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$164.00
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ADSSR8xPROXR_MIX
RS232 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$164.00
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BTADSSR8xPROXR
Bluetooth 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$234.00
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BTADSSR8xPROXR_MIX
Bluetooth 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$234.00
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BTUXPSSR8xPROXR
Bluetooth 8-Channel Solid State Relay Controller + UXP Expansion Port
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$234.00
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BTUXPSSR8xPROXR_MIX
Bluetooth 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$234.00
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FOADSSR8xPROXR
Fiber Optic 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$224.00
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FOADSSR8xPROXR_MIX
Fiber Optic 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$224.00
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FOUXPSSR8xPROXR
Fiber Optic 8-Channel Solid State Relay Controller + UXP Expansion Port
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$224.00
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FOUXPSSR8xPROXR_MIX
Fiber Optic 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$224.00
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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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NEADR81DPDTPROXR
Ethernet 8-Channel 1-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$250.00
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NEADR83DPDTPROXR
Ethernet 8-Channel 3-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$270.00
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NEADR85DPDTPROXR
Ethernet 8-Channel 5-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$290.00
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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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NEADSSR8xPROXR
Ethernet 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$299.00
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NEADSSR8xPROXR_MIX
Ethernet 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$299.00
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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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NEUXPR81DPDTPROXR
Ethernet 8-Channel 1-Amp DPDT Relay Controller + UXP Expansion Port
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$250.00
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NEUXPR83DPDTPROXR
Ethernet 8-Channel 3-Amp DPDT Relay Controller + UXP Expansion Port
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$270.00
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NEUXPR85DPDTPROXR
Ethernet 8-Channel 5-Amp DPDT Relay Controller + UXP Expansion Port
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$290.00
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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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NEUXPSSR8xPROXR
Ethernet 8-Channel Solid State Relay Controller + UXP Expansion Port
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$299.00
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NEUXPSSR8xPROXR_MIX
Ethernet 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$299.00
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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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$412.00
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NWADR81DPDTPROXR
WiFi 802.11b 8-Channel 1-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$323.00
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NWADR83DPDTPROXR
WiFi 802.11b 8-Channel 3-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$343.00
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NWADR85DPDTPROXR
WiFi 802.11b 8-Channel 5-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
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$363.00
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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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$392.00
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NWADSSR8xPROXR
WiFi 802.11b 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$369.00
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NWADSSR8xPROXR_MIX
WiFi 802.11b 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$369.00
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NWUXPR810PROXR
WiFi 802.11b 8-Channel 10-Amp SPDT Relay Controller + UXP Universal Expansion Port
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$412.00
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NWUXPR81DPDTPROXR
WiFi 802.11b 8-Channel 1-Amp DPDT Relay Controller + UXP Expansion Port
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$323.00
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NWUXPR83DPDTPROXR
WiFi 802.11b 8-Channel 3-Amp DPDT Relay Controller + UXP Expansion Port
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$343.00
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NWUXPR85DPDTPROXR
WiFi 802.11b 8-Channel 5-Amp DPDT Relay Controller + UXP Expansion Port
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$363.00
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NWUXPR85PROXR
WiFi 802.11b 8-Channel 5-Amp SPDT Relay Controller + UXP Universal Expansion Port
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$392.00
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NWUXPSSR8xPROXR
WiFi 802.11b 8-Channel Solid State Relay Controller + UXP Expansion Port
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$369.00
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NWUXPSSR8xPROXR_MIX
WiFi 802.11b 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$369.00
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R810OC8LP
8-Channel 10A SPDT Relay + 8-Channel 150ma O.C. Output RS-232 Latching Relay Board
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$188.00
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R81DPDTOC8LP
8-Channel 1A DPDT Relay + 8-Channel 150ma O.C. Output RS-232 Latching Relay Board
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$160.00
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R83DPDTOC8LP
8-Channel 3A DPDT Relay + 8-Channel 150ma O.C. Output RS-232 Latching Relay Board
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$180.00
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R85DPDTOC8LP
8-Channel 5A DPDT Relay + 8-Channel 150ma O.C. Output RS-232 Latching Relay Board
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$200.00
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R85OC8LP
8-Channel 5A SPDT Relay + 8-Channel 150ma O.C. Output RS-232 Latching Relay Board
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$168.00
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UXPSSR8xPROXR
RS-232 8-Channel Solid State Relay Controller + UXP Expansion Port
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$164.00
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UXPSSR8xPROXR_MIX
RS232 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$164.00
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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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ZADR810PROXR_XSC
XSC Long Range Wireless Controller 8-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
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$299.00
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ZADR810PROXR_ZBMESH
ZB ZigBee Mesh Networking 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
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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ZADR85PROXR_XSC
XSC Long Range Wireless Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$279.00
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ZADR85PROXR_ZBMESH
ZB ZigBee Mesh Networking Relay Controller 8-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
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$199.00
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ZADSSR8xPROXR
802.15.4 Wireless 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$199.00
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ZADSSR8xPROXR_MIX
802.15.4 Wireless 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$199.00
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ZADSSR8xPROXR_XSC
XSC Long Range Wireless 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$279.00
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ZADSSR8xPROXR_XSC_MIX
XSC Long Range Wireless 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$279.00
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ZADSSR8xPROXR_ZBMESH
ZB ZigBee Mesh Networking 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$199.00
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ZADSSR8xPROXR_ZBMESH_MIX
ZB ZigBee Mesh Networking 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/
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$199.00
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ZUXPSSR8xPROXR
802.15.4 Wireless 8-Channel Solid State Relay Controller + UXP Expansion Port
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$199.00
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ZUXPSSR8xPROXR_MIX
802.15.4 Wireless 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$199.00
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ZUXPSSR8xPROXR_XSC
XSC Long Range Wireless 8-Channel Solid State Relay Controller + UXP Expansion Port
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$279.00
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ZUXPSSR8xPROXR_XSC_MIX
XSC Long Range Wireless 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$279.00
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ZUXPSSR8xPROXR_ZBMESH
ZB ZigBee Mesh Networking 8-Channel Solid State Relay Controller + UXP Expansion Port
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$199.00
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ZUXPSSR8xPROXR_ZBMESH_MIX
ZB ZigBee Mesh Networking 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$199.00
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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/