WebRelay™ Single Relay & Input Modules

ControlByWeb WebRelay™ Single Relay and Input Modules feature updated firmware and optional Wi-Fi® or cellular connectivity, delivering robust remote relay control at the edge of systems. These WebRelay devices are engineered for industrial reliability and flexible deployment without licensing fees or vendor lock-in. The streamlined browser-based interface and open REST API seamlessly integrate with PLCs, SCADA platforms, and IIoT applications. CWB WebRelay Single Relay and Input Modules can be deployed as stand-alone controllers or as part of a larger automation network. Either format provides dependable performance in commercial, industrial, and OEM environments.

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Industrial Automation
Controllers
I/O Controllers

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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Number of Outputs
Analogue / Digital
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Number of Inputs
Series
ControlByWeb I/O Controllers WebRelay single relay and input module with browser-based interface, open REST API, 1 relay, 1 digital input, data logging, and 400-Series firmware capabilities. (standard Ethernet/DC-powered model).
Datasheet
35In Stock
Min.: 1
Mult.: 1

DIN Rail Mount 400 Series
ControlByWeb I/O Controllers WebRelay single relay and input module with browser-based interface, open REST API, 1 relay, 1 digital input, data logging, and 400-Series firmware capabilities. (Wi-Fi model).
Datasheet
10In Stock
Min.: 1
Mult.: 1

1 Output Digital Relay DIN Rail Mount 1 Input 400 Series
ControlByWeb I/O Controllers WebRelay single relay and input module with browser-based interface, open REST API, 1 relay, 1 digital input, data logging, and 400-Series firmware capabilities. (cellular/Wi-Fi model; with a 12-month, 10 MB/mo cellular data plan included).
Datasheet
5In Stock
Min.: 1
Mult.: 1

1 Output Digital Relay DIN Rail Mount 1 Input 400 Series
ControlByWeb I/O Controllers WebRelay single relay and input module with browser-based interface, open REST API, 1 relay, 1 digital input, data logging, and 400-Series firmware capabilities. (PoE/Ethernet model).
Datasheet
16Expected 9/2/2026
Min.: 1
Mult.: 1

DIN Rail Mount 400 Series