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 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 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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R81DPDT
RS-232 8-Channel 1-Amp DPDT Small Signal Relay Controller Board
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$119.00
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R83DPDT
RS-232 8-Channel 3-Amp DPDT Signal Relay Controller Board
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$139.00
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R85DPDT
RS-232 8-Channel 5-Amp DPDT High-Current Signal Relay Controller Board
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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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R830
8-Channel 30-Amp SPST High-Power Relay Controller Board
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$249.00
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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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IOADR830
Hybrid 8-Relay 30-Amp SPST Controller 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 Relay Controller 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 Controller Board
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$99.00
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F83
RS-232 8-Channel 3-Amp N-Channel FET Controller Board
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$119.00
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F85
RS-232 8-Channel 5-Amp N-Channel FET Controller Board
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$134.00
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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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XR81DPDT
8-Channel 1A DPDT Expansion Relay Controller
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$119.00
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XR83DPDT
8-Channel 3A DPDT Expansion Relay Controller
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$139.00
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XR820
8-Channel 20A SPDT Expansion Relay Controller
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$199.00
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XR830
8-Channel 30A SPST Expansion Relay Controller
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$239.00
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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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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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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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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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UXPSSR8xPROXR
RS-232 8-Channel Solid State Relay Controller + UXP Expansion Port
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$164.00
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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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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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UXPSSR8xPROXR_MIX
RS232 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$164.00
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XRSSR8x
Expansion 8-Channel Solid State Relay Controller
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$129.00
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XRSSR8x_MIX
Expansion 8-Channel Solid State Mixed SSR Relay Controller
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$129.00
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BTADSSR8xPROXR
Bluetooth Wireless 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 Wireless 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 Wireless 8-Channel Solid State Relay Controller + UXP Expansion Port
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$234.00
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BTUXPSSR8xPROXR_MIX
Bluetooth Wireless 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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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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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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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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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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ZADSSR8xPROXR_ZBMESH
ZB ZigBee 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$199.00
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ZUXPSSR8xPROXR_ZBMESH_MIX
ZB ZigBee 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$199.00
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ZUXPSSR8xPROXR_ZBMESH
ZB ZigBee 8-Channel Solid State Relay Controller + UXP Expansion Port
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$199.00
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ZADSSR8xPROXR_ZBMESH_MIX
ZB ZigBee 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/
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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_XSC
XSC Long Range Wireless 8-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
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$244.00
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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_MIX
XSC Long Range Wireless 8-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
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$244.00
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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_XSC
XSC Long Range Wireless 8-Channel Solid State Relay Controller + UXP Expansion Port
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$244.00
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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_MIX
XSC Long Range Wireless 8-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
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$244.00
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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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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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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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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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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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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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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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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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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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MirXR85
Relay Mirror Pair 2-Controllers Each with Eight 5-Amp SPDT Relay and 8 Contact Closure Inputs
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$398.00
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MirXR810
Relay Mirror Pair 2-Controllers Each with Eight 10-Amp SPDT Relay and 8 Contact Closure Inputs
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$438.00
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MirXR820
Relay Mirror Pair 2-Controllers Each with Eight 20-Amp SPDT Relay and 8 Contact Closure Inputs
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$538.00
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MirXR830
Relay Mirror Pair 2-Controllers Each with Eight 30-Amp SPST Relay and 8 Contact Closure Inputs
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$618.00
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MirXSSR8x
Relay Mirror Pair 2-Controllers Each with Eight Solid State SPST Relay and 8 Contact Closure Inputs
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$398.00
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MirXSSR8x_MIX
Relay Mirror Pair 2-Controllers Each with Eight Solid State Mixed SPST Relay and 8 Contact Closure I
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$398.00
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KLRR85_USB
Key Fob Relay 8-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface
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$306.00
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KLRR810_USB
Key Fob Relay 8-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface
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$326.00
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KLRR820_USB
Key Fob Relay 8-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface
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$376.00
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KLRR830_USB
Key Fob Relay 8-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with USB Interface
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$416.00
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KLRR85_802154
Key Fob Relay 8-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with 802.15.4 Interface
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$295.00
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KLRR810_802154
Key Fob Relay 8-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with 802.15.4 Interface
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$315.00
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KLRR820_802154
Key Fob Relay 8-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with 802.15.4 Interface
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$365.00
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KLRR830_802154
Key Fob Relay 8-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with 802.15.4 Interface
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$405.00
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KLRR85_ZBMESH
Key Fob Relay 8-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with ZB ZigBee Interface
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$295.00
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KLRR810_ZBMESH
Key Fob Relay 8-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with ZB ZigBee Interface
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$315.00
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KLRR820_ZBMESH
Key Fob Relay 8-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with ZB ZigBee Interface
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$365.00
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KLRR830_ZBMESH
Key Fob Relay 8-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with ZB ZigBee Interface
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$405.00
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KLRR85_XSC
Key Fob Relay 8-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with XSC Interface
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$360.00
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KLRR810_XSC
Key Fob Relay 8-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with XSC Interface
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$380.00
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KLRR820_XSC
Key Fob Relay 8-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with XSC Interface
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$430.00
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KLRR830_XSC
Key Fob Relay 8-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with XSC Interface
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$515.00
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KLRSSR8x_USB
Key Fob Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with USB Interface
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$306.00
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KLRSSR8x_802154
Key Fob Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$295.00
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KLRSSR8x_ZBMESH
Key Fob Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$295.00
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KLRSSR8x_XSC
Key Fob Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with XSC Interface
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$315.00
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KLRSSR8x_USB_MIX
Key Fob Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with USB Interface
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$306.00
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KLRSSR8x_802154_MIX
Key Fob Relay 8-Channel Solid State MIX + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$295.00
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KLRSSR8x_ZBMESH_MIX
Key Fob Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$295.00
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KLRSSR8x_XSC_MIX
Key Fob Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with XSC Interface
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$315.00
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LRR85_USB
Reactor Relay 8-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface
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$270.00
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LRR810_USB
Reactor Relay 8-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface
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$290.00
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LRR820_USB
Reactor Relay 8-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface
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$340.00
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LRR830_USB
Reactor Relay 8-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with USB Interface
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$380.00
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LRR85_802154
Reactor Relay 8-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$257.00
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LRR810_802154
Reactor Relay 8-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$277.00
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LRR820_802154
Reactor Relay 8-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$327.00
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LRR830_802154
Reactor Relay 8-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$367.00
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LRR85_ZBMESH
Reactor Relay 8-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$257.00
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LRR810_ZBMESH
Reactor Relay 8-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$277.00
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LRR820_ZBMESH
Reactor Relay 8-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$327.00
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LRR830_ZBMESH
Reactor Relay 8-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$367.00
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LRR85_XSC
Reactor Relay 8-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with XSC Interface
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$322.00
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LRR810_XSC
Reactor Relay 8-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with XSC Interface
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$342.00
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LRR820_XSC
Reactor Relay 8-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with XSC Interface
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$392.00
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LRR830_XSC
Reactor Relay 8-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with XSC Interface
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$477.00
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LRSSR8x_USB
Reactor Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with USB Interface
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$270.00
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LRSSR8x_802154
Reactor Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$257.00
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LRSSR8x_ZBMESH
Reactor Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$257.00
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LRSSR8x_XSC
Reactor Relay 8-Channel Solid State + 8-Channel 8-Bit A/D with XSC Interface
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$277.00
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LRSSR8x_USB_MIX
Reactor Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with USB Interface
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$270.00
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LRSSR8x_802154_MIX
Reactor Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with 802.15.4 Interface
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$257.00
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LRSSR8x_ZBMESH_MIX
Reactor Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with ZB ZigBee Interface
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$257.00
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LRSSR8x_XSC_MIX
Reactor Relay 8-Channel Solid State Mix + 8-Channel 8-Bit A/D with XSC Interface
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$277.00
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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/