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 151 - 200 of 484 Products in this Category.
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FOADSR245DPDTPROXR
  • 24 Relays
  • 5 Amp DPDT
  • Fiber-Optic Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$603.00/ea
FOADSR245PROXR
  • 24 Relays
  • 5 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$444.00/ea
FOADSR3210PROXR
  • 32 Relays
  • 10 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$619.00/ea
FOADSR321DPDTPROXR
  • 32 Relays
  • 1 Amp DPDT
  • Fiber-Optic Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$614.00/ea
FOADSR323DPDTPROXR
  • 32 Relays
  • 3 Amp DPDT
  • Fiber-Optic Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$694.00/ea
FOADSR325DPDTPROXR
  • 32 Relays
  • 5 Amp DPDT
  • Fiber-Optic Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$774.00/ea
FOADSR325PROXR
  • 32 Relays
  • 5 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$539.00/ea
FOADSRR32-5SPSTPROXR
  • 32 Relays
  • 0.5 Amp Reed
  • Fiber-Optic Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$614.00/ea
FOADSSR4xPROXR
  • 4 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$184.00/ea
FOADSSR4xPROXR_MIX
  • 4 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$184.00/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
FOUXPR1620PROXR
  • 16 Relays
  • 20 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$463.00/ea
FOUXPR1630PROXR
  • 16 Relays
  • 30 Amp SPST
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$527.00/ea
FOUXPR3220PROXR
  • 32 Relays
  • 20 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$758.00/ea
FOUXPR3230PROXR
  • 32 Relays
  • 30 Amp SPST
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$872.00/ea
FOUXPSR1610PROXR
  • 16 Relays
  • 10 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$389.00/ea
FOUXPSR165PROXR
  • 16 Relays
  • 5 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$349.00/ea
FOUXPSR2410PROXR
  • 24 Relays
  • 10 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$504.00/ea
FOUXPSR245PROXR
  • 24 Relays
  • 5 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$444.00/ea
FOUXPSR3210PROXR
  • 32 Relays
  • 10 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$619.00/ea
FOUXPSR325PROXR
  • 32 Relays
  • 5 Amp SPDT
  • Fiber-Optic Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$539.00/ea
FOUXPSRR32-5SPSTPROXR
  • 32 Relays
  • 0.5 Amp Reed
  • Fiber-Optic Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$614.00/ea
FOUXPSSR4xPROXR
  • 4 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$184.00/ea
FOUXPSSR4xPROXR_MIX
  • 4 Relays
  • Optional Amp Solid-State
  • Fiber-Optic Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$184.00/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
NEADR410PROXR
  • 4 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$230.00/ea
NEADR41DPDTPROXR
  • 4 Relays
  • 1 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$220.00/ea
NEADR43DPDTPROXR
  • 4 Relays
  • 3 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$230.00/ea
NEADR45DPDTPROXR
  • 4 Relays
  • 5 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • Learn More
$240.00/ea
NEADR45PROXR
  • 4 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • Learn More
$220.00/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
NEADSSR4xPROXR
  • 4 Relays
  • Optional Amp Solid-State
  • Ethernet Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$220.00/ea
NEADSSR4xPROXR_MIX
  • 4 Relays
  • Optional Amp Solid-State
  • Ethernet Communication
  • Ideal Use: SS Switching
  • ProXR Series
  • Learn More
$220.00/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
NEUXPR1610PROXR
  • 16 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$453.00/ea
NEUXPR161DPDTPROXR
  • 16 Relays
  • 1 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$416.00/ea
NEUXPR163DPDTPROXR
  • 16 Relays
  • 3 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$456.00/ea
NEUXPR165DPDTPROXR
  • 16 Relays
  • 5 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$496.00/ea
NEUXPR165PROXR
  • 16 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$413.00/ea
NEUXPR3210PROXR
  • 32 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$683.00/ea
NEUXPR325PROXR
  • 32 Relays
  • 5 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$603.00/ea
NEUXPR410PROXR
  • 4 Relays
  • 10 Amp SPDT
  • Ethernet Communication
  • Ideal Use: Power Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$230.00/ea
NEUXPR41DPDTPROXR
  • 4 Relays
  • 1 Amp DPDT
  • Ethernet Communication
  • Ideal Use: Signal Switching
  • ProXR Series
  • XR and UXP Expansion Ports
  • Learn More
$220.00/ea
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