USB, Ethernet, WiFi (802.11b), 802.15.4 Wireless, and RS-232 Serial Relay Controller Boards

USB, Ethernet, WiFi (802.11b), 802.15.4 Wireless, and RS-232 Serial Relay Controller Boards Allow Computer Controlled Switching using many connectivity options. We have a large number of relay controllers for high-current computer controlled switching as well as low-current signal switching. Relays typically have three connections: Normally Open, Common, and Normally Closed. In most applications, you will connect external devices, such as lights and motors, between the Common and Normally Open lines. When the relay is activated via software, your device is powered. Relay controllers are ideal for activating motors, lights, solenoids, and much more...all under computer control. Click on product photos below for additional information.

Relay Controllers

Displaying 51 - 100 of 484 Products in this Category.
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R3210PROXR
  • 32 Relays
  • 10 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$529.00/ea
R165R16OCLP
  • 16 Relays
  • 5 Amp
  • Serial Communication
  • Ideal Use: Switching
  • Series
  • Learn More
$298.00/ea
R1610R16OCLP
  • 16 Relays
  • 10 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • Series
  • Learn More
$338.00/ea
R161DPDTR16OCLP
  • 16 Relays
  • 1 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Series
  • Learn More
$301.00/ea
R163DPDTR16OCLP
  • 16 Relays
  • 3 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Series
  • Learn More
$341.00/ea
R165DPDTR16OCLP
  • 16 Relays
  • 5 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • Series
  • Learn More
$381.00/ea
R161DPDTR165PROXR
  • 32 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$511.00/ea
R161DPDTR1610PROXR
  • 32 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$551.00/ea
R163DPDTR165PROXR
  • 32 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$551.00/ea
R163DPDTR1610PROXR
  • 32 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$591.00/ea
R165DPDTR165PROXR
  • 32 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$591.00/ea
R165DPDTR1610PROXR
  • 32 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$631.00/ea
R321DPDTPROXR
  • 32 Relays
  • 1 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$524.00/ea
R323DPDTPROXR
  • 32 Relays
  • 3 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$604.00/ea
R325DPDTPROXR
  • 32 Relays
  • 5 Amp DPDT
  • Serial Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$684.00/ea
R121DPDTR125PROXR
  • 24 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$386.00/ea
R121DPDTR1210PROXR
  • 24 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$416.00/ea
R123DPDTR125PROXR
  • 24 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$416.00/ea
R123DPDTR1210PROXR
  • 24 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$446.00/ea
R125DPDTR125PROXR
  • 24 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$446.00/ea
R125DPDTR1210PROXR
  • 24 Relays
  • Amp Hybrid
  • Serial Communication
  • Ideal Use: Switching
  • ProXR Series
  • Learn More
$476.00/ea
UADR220PROXR
  • 2 Relays
  • 20 Amp SPDT
  • USB Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$126.00/ea
UADR230PROXR
  • 2 Relays
  • 30 Amp SPST
  • USB Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$136.00/ea
UADR45PROXR
  • 4 Relays
  • 5 Amp SPDT
  • USB Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$146.00/ea
UADR410PROXR
  • 4 Relays
  • 10 Amp SPDT
  • USB Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$156.00/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
ADR220PROXR
  • 2 Relays
  • 20 Amp SPDT
  • Serial Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$104.00/ea
ADR230PROXR
  • 2 Relays
  • 30 Amp SPST
  • Serial Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$114.00/ea
NER165PROXR
  • 16 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$413.00/ea
NER1610PROXR
  • 16 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$453.00/ea
NER325PROXR
  • 32 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$603.00/ea
NER3210PROXR
  • 32 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$683.00/ea
NWR165PROXR
  • 16 Relays
  • 5 Amp SPDT
  • WiFi Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$483.00/ea
NWR1610PROXR
  • 16 Relays
  • 10 Amp SPDT
  • WiFi Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$523.00/ea
NWR325PROXR
  • 32 Relays
  • 5 Amp SPDT
  • WiFi Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$673.00/ea
NWR3210PROXR
  • 32 Relays
  • 10 Amp SPDT
  • WiFi Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$753.00/ea
NER161DPDTPROXR
  • 16 Relays
  • 1 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$416.00/ea
NER163DPDTPROXR
  • 16 Relays
  • 3 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$456.00/ea
NER165DPDTPROXR
  • 16 Relays
  • 5 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$496.00/ea
NWR161DPDTPROXR
  • 16 Relays
  • 1 Amp DPDT
  • WiFi Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$486.00/ea
NWR163DPDTPROXR
  • 16 Relays
  • 3 Amp DPDT
  • WiFi Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$526.00/ea
NWR165DPDTPROXR
  • 16 Relays
  • 5 Amp DPDT
  • WiFi Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$566.00/ea
BTADR1620PROXR
  • 16 Relays
  • 20 Amp SPDT
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$471.00/ea
BTADR1630PROXR
  • 16 Relays
  • 30 Amp SPST
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$535.00/ea
BTADR3220PROXR
  • 32 Relays
  • 20 Amp SPDT
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$766.00/ea
BTADR3230PROXR
  • 32 Relays
  • 30 Amp SPST
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$879.00/ea
BTADSR1610PROXR
  • 16 Relays
  • 10 Amp SPDT
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Power Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$399.00/ea
BTADSR161DPDTPROXR
  • 16 Relays
  • 1 Amp DPDT
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$362.00/ea
BTADSR163DPDTPROXR
  • 16 Relays
  • 3 Amp DPDT
  • Bluetooth Communication
  • Range: 328 ft.
  • Ideal Use: Signal Switching
  • ProXR Series
  • 8 A/D Inputs
  • XR Expansion Port
  • Learn More
$402.00/ea
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