4 Channel Relay board
4 Channel RelayConveniently Small Size
Our 4 Channel Relay Controller offers a conveniently small size with the integrated power of our standardized PRO relay command set. Quad relay controllers are ideal for computer control applications where small size and high functionality are required. We offer a large selection of 4 Relay Drivers for applications ranging from low power signal switching to high voltage, high current applications and 4 channel dpdt relay.
Configurations To Fit Every Need
If your looking for a four channel relay controller we have a configuration to fit every need. RS-232 Relay controllers allow computer controlled switching using the Serial port of your computer. Our 4 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 4 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 4 channel DPDT relay, 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.
4 Channel Relay Controller Boards
RS-232 4-Channel SPDT Relay Controller Board with 5 Amp Relays
RS-232 4-Channel SPDT Relay Controller Board with 10 Amp Relays
Quad 1-Amp DPDT Small Signal Relay Controller Board
Quad 3-Amp DPDT Signal Relay Controller Board
Quad 5-Amp DPDT High-Current Signal Relay Controller Board
Quad 20-Amp SPDT High-Power Relay Controller Board
Quad 30-Amp SPST High-Power Relay Controller Board
Expansion Relay Controller Board with 4 5-Amp SPDT Relays
Expansion Relay Controller Board with 4 10-Amp SPDT Relays
4-Channel 1A DPDT Expansion Relay Controller
4-Channel 3A DPDT Expansion Relay Controller
4-Channel 5A DPDT Expansion Relay Controller
Low Cost 4-Channel 20A SPDT Expansion Relay Controller
4-Channel 20A SPDT Expansion Relay Controller
4-Channel 30A SPST Expansion Relay Controller
USB Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
USB Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
802.15.4 Wireless Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
802.15.4 Wireless Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
RS-232 Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
RS-232 Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
Bluetooth Wireless Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
Bluetooth Wireless Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
Fiber Optic Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
Fiber Optic Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
4-Channel 1-Amp DPDT Relay Controller with RS-232 and Relay Interface
4-Channel 3-Amp DPDT Relay Controller with RS-232 and Relay Interface
4-Channel 5-Amp DPDT Relay Controller with RS-232 and Relay Interface
4-Channel 1-Amp DPDT RS-232 Relay Controller with Relay Interface
4-Channel 3-Amp DPDT RS-232 Relay Controller with Relay Interface
4-Channel 5-Amp DPDT RS-232 Relay Controller with Relay Interface
RS-232 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
4-Channel Solid State Relay Controller + UXP Expansion Port
ZB ZigBee Relay Controller 4-Channel 10 Amp SPDT + 8-Channel 8/10-Bit A/D
ZB ZigBee Relay Controller 4-Channel 5 Amp SPDT + 8-Channel 8/10-Bit A/D
RS-232 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
RS232 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
Expansion 4-Channel Solid State Relay Controller
Expansion 4-Channel Solid State Mixed SSR Relay Controller
Bluetooth Wireless 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
Bluetooth Wireless 4-Channel Mixed SSR Solid State Relay Controller + 8-Channel 8/10-Bit A/D
Bluetooth Wireless 4-Channel Solid State Relay Controller + UXP Expansion Port
Bluetooth Wireless 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
Fiber Optic 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
Fiber Optic 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
Fiber Optic 4-Channel Solid State Relay Controller + UXP Expansion Port
Fiber Optic 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
Ethernet 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
Ethernet 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
Ethernet 4-Channel Solid State Relay Controller + UXP Expansion Port
Ethernet 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
WiFi 802.11b 4-Channel Solid State Relay Controller + UXP Expansion Port
WiFi 802.11b 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
802.15.4 Wireless 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
802.15.4 Wireless 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
ZB ZigBee 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
ZB ZigBee 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/
ZB ZigBee 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
ZB ZigBee 4-Channel Solid State Relay Controller + UXP Expansion Port
XSC Long Range Wireless 4-Channel Solid State Relay Controller + 8-Channel 8/10-Bit A/D
XSC Long Range Wireless 4-Channel Solid State Mixed SSR Relay Controller + 8-Channel 8/10-Bit A/D
802.15.4 Wireless 4-Channel Solid State Relay Controller + UXP Expansion Port
802.15.4 Wireless 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
XSC Long Range Wireless 4-Channel Solid State Relay Controller + UXP Expansion Port
XSC Long Range Wireless 4-Channel Solid State Mixed SSR Relay Controller + UXP Expansion Port
WiFi 802.11b 4-Channel 1-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel 5-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
Ethernet 4-Channel 1-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
Ethernet 4-Channel 3-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
Ethernet 4-Channel 5-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel 1-Amp DPDT Relay Controller + UXP Expansion Port
WiFi 802.11b 4-Channel 3-Amp DPDT Relay Controller + UXP Expansion Port
WiFi 802.11b 4-Channel 5-Amp DPDT Relay Controller + UXP Expansion Port
Ethernet 4-Channel 1-Amp DPDT Relay Controller + UXP Expansion Port
Ethernet 4-Channel 3-Amp DPDT Relay Controller + UXP Expansion Port
Ethernet 4-Channel 5-Amp DPDT Relay Controller + UXP Expansion Port
Ethernet 4-Channel 5-Amp SPDT Relay Controller + UXP Expansion Port
Ethernet 4-Channel 10-Amp SPDT Relay Controller + UXP Expansion Port
Ethernet 4-Channel 5-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
Ethernet 4-Channel 10-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel 5-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel 10-Amp SPDT Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel 3-Amp DPDT Relay Controller + 8-Channel 8/10-Bit A/D
WiFi 802.11b 4-Channel 10-Amp SPDT Relay Controller + UXP Universal Expansion Port
WiFi 802.11b 4-Channel 5-Amp SPDT Relay Controller + UXP Universal Expansion Port
Relay Mirror Pair 2-Controllers Each with Four 5-Amp SPDT Relay and 4 Contact Closure Inputs
Relay Mirror Pair 2-Controllers Each with Four 10-Amp SPDT Relay and 4 Contact Closure Inputs
Relay Mirror Pair 2-Controllers Each with Four 20-Amp SPDT Relay and 4 Contact Closure Inputs
Relay Mirror Pair 2-Controllers Each with Four 30-Amp SPST Relay and 4 Contact Closure Inputs
Reactor Relay 4-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface
Reactor Relay 4-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface
Reactor Relay 4-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with USB Interface
Reactor Relay 4-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with USB Interface
Reactor Relay 4-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with 802.15.4 Interface
Reactor Relay 4-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with 802.15.4 Interface
Reactor Relay 4-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with 802.15.4 Interface
Reactor Relay 4-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with 802.15.4 Interface
Reactor Relay 4-Channel 5-Amp SPDT + 8-Channel 8-Bit A/D with XSC Interface
Reactor Relay 4-Channel 10-Amp SPDT + 8-Channel 8-Bit A/D with XSC Interface
Reactor Relay 4-Channel 20-Amp SPDT + 8-Channel 8-Bit A/D with XSC Interface
Reactor Relay 4-Channel 30-Amp SPST + 8-Channel 8-Bit A/D with XSC Interface
Key Fob Relay 4-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface
Key Fob Relay 4-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface
Key Fob Relay 4-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with USB Interface
Key Fob Relay 4-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with USB Interface
Key Fob Relay 4-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with 802.15.4 Interface
Key Fob Relay 4-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with 802.15.4 Interface
Key Fob Relay 4-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with 802.15.4 Interface
Key Fob Relay 4-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with 802.15.4 Interface
Key Fob Relay 4-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with ZB ZigBee Interface
Key Fob Relay 4-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with ZB ZigBee Interface
Key Fob Relay 4-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with ZB ZigBee Interface
Key Fob Relay 4-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with ZB ZigBee Interface
Key Fob Relay 4-Channel 5-Amp SPDT + 3-Channel 8-Bit A/D with XSC Interface
Key Fob Relay 4-Channel 10-Amp SPDT + 3-Channel 8-Bit A/D with XSC Interface
Key Fob Relay 4-Channel 20-Amp SPDT + 3-Channel 8-Bit A/D with XSC Interface
Key Fob Relay 4-Channel 30-Amp SPST + 3-Channel 8-Bit A/D with XSC Interface
1-Relay Controllers
RS232 Relays
USB Relays
ZB ZigBee Relays
Bluetooth Relays
Fiber Optic Relays
Ethernet Relays
WiFi Relays
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