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

Displaying 1 - 50 of 89 Products in this Category.
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R85PRO
  • 8 Relays
  • 5 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • Economy Series
  • Learn More
$139.00/ea
R810PRO
  • 8 Relays
  • 10 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • Economy Series
  • Learn More
$159.00/ea
R81DPDT
  • 8 Relays
  • 1 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$119.00/ea
R83DPDT
  • 8 Relays
  • 3 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$139.00/ea
R85DPDT
  • 8 Relays
  • 5 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$159.00/ea
R820
  • 8 Relays
  • 20 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • Economy Series
  • Learn More
$209.00/ea
R830
  • 8 Relays
  • 30 Amp SPST
  • Serial Communication
  • Ideal Use: Power Switching
  • Economy Series
  • Learn More
$249.00/ea
IOADR85
  • 8 Relays
  • Amp SPDT
  • Serial Communication
  • Ideal Use: Switching
  • Series
  • Learn More
$209.00/ea
IOADR810
  • 8 Relays
  • Amp SPDT
  • Serial Communication
  • Ideal Use: Switching
  • Series
  • Learn More
$229.00/ea
IOADR820
  • 8 Relays
  • Amp SPDT
  • Serial Communication
  • Ideal Use: Switching
  • Series
  • Learn More
$279.00/ea
IOADR830
  • 8 Relays
  • Amp SPST
  • Serial Communication
  • Ideal Use: Switching
  • Series
  • Learn More
$319.00/ea
SSR82AC
  • 8 Channels
  • Serial Communication
  • Series
  • Learn More
$129.00/ea
PWM81
RS-232 8-Channel 1-Amp Speed Controller/Light Dimmer Board

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$99.00/ea
PWM83
RS-232 8-Channel 3-Amp Speed Controller/Light Dimmer Board

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$119.00/ea
PWM85
RS-232 8-Channel 5-Amp Speed Controller/Light Dimmer Board

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$134.00/ea
F81
RS-232 8-Channel 1-Amp N-Channel FET Controller Board

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$99.00/ea
F83
RS-232 8-Channel 3-Amp N-Channel FET Controller Board

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$119.00/ea
F85
RS-232 8-Channel 5-Amp N-Channel FET Controller Board

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$134.00/ea
UADR85PROXR
  • 8 Relays
  • 5 Amp SPDT
  • USB Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$186.00/ea
UADR810PROXR
  • 8 Relays
  • 10 Amp SPDT
  • USB Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$206.00/ea
ADR85PROXR
  • 8 Relays
  • 5 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$164.00/ea
ADR810PROXR
  • 8 Relays
  • 10 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$184.00/ea
FOADR85PROXR
  • 8 Relays
  • 5 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$224.00/ea
FOADR810PROXR
  • 8 Relays
  • 10 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$244.00/ea
R81DPDTCNRS
  • 8 Relays
  • 1 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$149.00/ea
R83DPDTCNRS
  • 8 Relays
  • 3 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$169.00/ea
R85DPDTCNRS
  • 8 Relays
  • 5 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$189.00/ea
R81DPDTCN
  • 8 Relays
  • 1 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$139.00/ea
R83DPDTCN
  • 8 Relays
  • 3 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$159.00/ea
R85DPDTCN
  • 8 Relays
  • 5 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Economy Series
  • Learn More
$179.00/ea
ADSSR8xPROXR
  • 8 Relays
  • Optional Amp Solid-State
  • Serial Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$164.00/ea
ADSSR8xPROXR_MIX
  • 8 Relays
  • Optional Amp Solid-State
  • Serial Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$164.00/ea
FOADSSR8xPROXR
  • 8 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$224.00/ea
FOADSSR8xPROXR_MIX
  • 8 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$224.00/ea
FOUXPSSR8xPROXR
  • 8 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$224.00/ea
FOUXPSSR8xPROXR_MIX
  • 8 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$224.00/ea
NEADR810PROXR
  • 8 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$270.00/ea
NEADR81DPDTPROXR
  • 8 Relays
  • 1 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$250.00/ea
NEADR83DPDTPROXR
  • 8 Relays
  • 3 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$270.00/ea
NEADR85DPDTPROXR
  • 8 Relays
  • 5 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$290.00/ea
NEADR85PROXR
  • 8 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$250.00/ea
NEADSSR8xPROXR
  • 8 Relays
  • Optional Amp Solid-State
  • Ethernet Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$299.00/ea
NEADSSR8xPROXR_MIX
  • 8 Relays
  • Optional Amp Solid-State
  • Ethernet Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$299.00/ea
NEUXPR810PROXR
  • 8 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$270.00/ea
NEUXPR81DPDTPROXR
  • 8 Relays
  • 1 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$250.00/ea
NEUXPR83DPDTPROXR
  • 8 Relays
  • 3 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$270.00/ea
NEUXPR85DPDTPROXR
  • 8 Relays
  • 5 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$290.00/ea
NEUXPR85PROXR
  • 8 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$250.00/ea
NEUXPSSR8xPROXR
  • 8 Relays
  • Optional Amp Solid-State
  • Ethernet Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$299.00/ea
NEUXPSSR8xPROXR_MIX
  • 8 Relays
  • Optional Amp Solid-State
  • Ethernet Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$299.00/ea
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