WebRelay™ | Single Relay & Input Module

Harness I/O through the internet with the original WebRelay™. It is an electromechanical relay featuring a built-in web server and optically isolated input that can be used to monitor dry contacts or control industrial equipment.
Manual Datasheet

WebRelay™ | Single Relay & Input Module

Flexible & Remote Relay Control

Harness I/O through the internet with the original WebRelay™. It is an electromechanical relay featuring a built-in web server and optically isolated input that can be used to monitor dry contacts or control industrial equipment.

1 Relay
1 Digital Input

Cellular-Enabled I/O for Remote Monitoring

Wide Carrier Coverage
eUICC (eSIM) technology allows ControlByWeb cellular devices to operate across multiple carriers. This allows us to optimize cellular coverage based on your location.

No WiFi Necessary 
Cellular simplifies your installation and fits where no wired infrastructure exists. There’s no need for third-party resources or IT intervention—everything you need from a PLC is included with the X-WR-441CW.

Primary or Backup
With the X-WR-441CW, you have the option to use Ethernet as the primary connection to the network and cellular as a failover. This allows logging, remote access, and email alerts even if Ethernet fails.

Built-In Connectivity
The X-WR-441CW includes an omnidirectional antenna for use with the embedded LTE-M cellular radio. The antenna is FCC compliant and will not cause interference when installed correctly.

Configurable Status Page
The X-WR-441CW is powered by a lightweight, built-in user interface. Cellular devices have additional settings within the UI where users can review their signal strength, see registration status, set cellular mode and ping interval, and more.

Combined network coverage map for ControlByWeb cellular devices

Unlock seamless I/O control with the original WebRelay™!

Featuring a built-in web server and optically isolated input, it’s perfect for monitoring dry contacts and controlling industrial equipment. Elevate your remote management today!
Contact Us

The WebRelay serves as the standard for controlling and monitoring devices from the comfort of your web browser. This simple network-controlled PLC is powerful and flexible—ideal in applications like pump and motor control, security lock systems, remote reboot, and lighting control

Features

Simple Web Dashboard
Password Protected
Automatic Reboot
Remote Relay Control

Applications

Pump & Motor Control
Lighting Control
Network Device Rebooting
Security Lock Systems

Relay Contacts

Number of Relays: 1
Max Voltage: 240VAC, 30VDC
Max Current: 12A
Contact Type: SPDT (Form C)
Load Type: General Purpose
Contact Resistance: < 30 milliohms initial
Contact Material: AgSnO2
Electrical Life: 100K cycles (Typical)
Mechanical Life: 10M cycles (Typical)
Environmental Rating: Over voltage Category II, Pollution Degree 2
Relay Modes: ON/OFF or Pulsed
Pulse Timer Duration: 0.1 to 86,400 Seconds (1-day)

Digital Inputs

Number of Inputs: 1
Type: Optically-Isolated
Voltage Range: 4-26 VDC
Current: 950uA @ 4V, 8.5mA @ 26V
Minimum Hold Time: 62.5mS
Input Isolation: 1500V
Input Functions: Monitor, Local Relay Control, Remote Relay Control

Remote Control & Monitor

WebRelay™ provides reliable remote relay control and discrete signal monitoring over any IP network. WebRelay, can provide remote relay control in countless applications including pump and motor control, security lock systems, remote reboot, and lighting control. WebRelay's powerful and flexible design make imagination its only limit.
WebRelay also has an optically isolated input that can be used to monitor the state of devices, control the relay, or control a remote relay somewhere else on the network. This feature is useful to extend the output of a PLC to another building or to allow a switch to control a device in another state.