WebRelay™ | Single Relay & Input Module

Price range: $189.99 through $289.99

The latest WebRelay™ is engineered for industrial reliability and flexible deployment. With updated firmware and optional Wi-Fi or cellular connectivity, it delivers robust remote relay control at the edge of your system.

A streamlined browser-based interface and open REST API provide seamless integration with PLCs, SCADA platforms, and IIoT applications—without licensing fees or vendor lock-in. Whether deployed as a stand-alone controller or part of a larger automation network, WebRelay™ offers dependable performance in commercial, industrial, and OEM environments. Note: This is the updated WebRelay. See the original WebRelay here.
  • 1 Relay & 1 Digital Input
  • Ethernet, Cellular, or WiFi
  • 9-28VDC and/or POE
Cellular and WiFi are Now Available. Note that X-WR-441CW and X-WR-441W models include cellular and WiFi capability respectively, which allows for more flexibility for your application.

Global Cellular Coverage. Discuss international cellular options with a sales engineer.

Frequently Bought Together

Select a Cellular Data Plan

Cell plan prices are annual. Plans auto-renew on the anniversary of activation.

Total: $189.99

In Stock, Ready to Ship

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

WebRelay Features

  • Simple Web Dashboard
  • Password Protected
  • Automatic Reboot
  • Remote Relay Control

WebRelay Applications

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

Part Numbers:

  • X-WR-441-I (standard 9-28VDC line power)
  • X-WR-441-E (POE and/or standard 9-28VDC line power)
  • X-WR-441W-I (WiFI, standard 9-28VDC line power)
  • X-WR-441CW-I (Cellular & WiFi, standard 9-28VDC line power)

Need Help Choosing the Right Product?

Let our Sales Engineers identify the right solution for your application.

Integration Icon

Integration Ready

We support HTTP GET, MQTT, Modbus TCP/IP, XML, JSON, SNMP, and our Cloud API with more on the way.

No-Code Logic Icon

No-Code Programmable Logic

Our intuitive Task Builder empowers you to build custom logic using drop-down menus in an if-this-then-that flow.

Peer-to-Peer Icon

P2P Networking & Remote I/O

Devices can communicate through Peer-to-Peer (P2P) networking to share I/O among other ControlByWeb controllers, assign any device as master, set up multiple masters, and link remote inputs and relay control.

Email Notifications Icon

Email Notifications

Stay in control of operations with real-time monitoring. Add intelligence to your emails through programmable logic to instantly send notifications to the right people and eliminate false alarms.

Built-In Firmware Icon

Easy-to-Use Embedded UI

Our devices come with a simple embedded user interface that will enable you to easily monitor, manage, and control ControlByWeb PLCs from any standard web browser.

Data Logging Icon

Data Logging

Enjoy scheduled and conditional logging with email and FTP log exports. Add the optional ControlByWeb Cloud for remote access and downloadable logs.

Cloud Compatible Icon

Cloud Compatible

Enhance your capabilities with the ControlByWeb Cloud. Gain enhanced features such as simplified remote device access, data logging, and advanced analytics.

Security Icon

Trusted Device Security

Our controllers have no built-in OS or file system, making them less prone to vulnerabilities. Third-party consultants and government agencies test the cybersecurity of our controllers.

IIoT Icon

IIoT Monitoring & Control

Access the device directly through an assigned IP address. Set up your network settings the way you want, to limit or allow remote access through the cloud.

International Plans

ControlByWeb cellular devices can be used in different countries all over the world. See a list of countries that can use cellular, or reach out to our Sales Engineers to learn more.

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 logic controller 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.

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.

WebRelay Case Studies

 

Specifications


Models
  • X-WR-1R12-1I-I
  • X-WR-1R12-1I-E
  • X-WR-441-I
  • X-WR-441-E
  • X-WR-441W-I
  • X-WR-441CW-I
Power Requirements
  • Voltage:
    • X-WR-1R12-1I-I: 9-28VDC
    • X-WR-1R12-1I-E: POE and/or 9-28VDC
    • X-WR-441-I: 9-28VDC
    • X-WR-441-E: POE and/or 9-28VDC
    • X-WR-441W-I: 9-28VDC
    • X-WR-441CW-I: 9-28VDC
  • Max Current: 460mA Max
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

Network
  • Type: 10/100 Base-T Ethernet Port
  • Wireless: WiFi Communication (X-WR-441CW/W models only)
  • Cellular: Cellular Modem (X-WR-441CW model only)
Connectors
  • Relay: 3-Position Removable
  • Power/Input: 5-Position Removable
  • Network: 8-pin RJ-45
LED Indicators
  • Number of LEDs: 4
    • Digital input voltage applied
    • Relay coil energized
    • Network linked
    • Network activity
Wireless (X-WR-441CW/W Only)
  • Network Standards: IEEE 802.11 b/g/n
  • Frequency Band: 2.412 – 2.462 GHz
  • Wi-Fi Security Standards: WPA2, WPA3
  • Network Settings: DHCP or Static
Physical
  • Operating Temperature: -40°F to 135°F (-40°C to 57°C)
  • Storage Temperature: -40°F to 185°F (-40°C to 85°C)
  • Humidity: 5% to 95% non condensing
  • Size:
    • 1.41in (35.7mm) wide
    • 3.88in (98.5mm) tall
    • 3.1in (78mm) deep (not including connector)
  • Weight: 5 oz (142 grams)
  • Enclosure Material: Lexan 940 Polycarbonate Plastic
  • Enclosure Flame Rating: UL94 V0

Protocols
  • X-WR-441/CW/W: HTTP, HTTPS, SSL, XML, MQTT, Modbus TCP/IP, SNMP, SMTP, Remote Services
  • HTTP, XML, Modbus TCP/IP
Password Settings
  • Password protection on setup page: Yes
  • Password protection on control page: Optional
  • Password Encoding: Base 64
  • Password Length: 10 Characters
Electromagnetic Compliance
  • IEC CISPR 22, CISPR 24
  • EU EN55024, EN55022
  • FCC 47CFR15 (-I Models class B, -E POE Model Class A)

Manuals & Downloads



Firmware

400 Series Firmware v3.12 Patch Notes (PDF)

400 Series Firmware v3.13.7.9 Patch Notes (PDF) (Latest)

X-WR-441

X-WR-441 Firmware v3.12.2.5 (for firmware versions 3.0 and higher)

X-WR-441 Firmware v3.13.7.9 (for firmware versions 3.12 and higher)

X-WR-441W

X-WR-441W Firmware v3.12.2.5 (for firmware versions 3.0 and higher)

X-WR-441W Firmware v3.13.7.9 (for firmware versions 3.12 and higher)

X-WR-441CW

X-WR-441CW Firmware v3.12.2.5 (for firmware versions 3.0 and higher)

X-WR-441CW Firmware v3.13.7.9 (for firmware versions 3.12 and higher)

Accessories


24V DIN Rail Power Supply

24V DIN Rail Power Supply - 2902992 (24V DIN Rail Power Supply)

GRI-28C Magnetic Sensor

GRI-28C Indoor Magnetic Contact Sensor

GRI-29C Magnetic Contact Sensor

GRI-29C Indoor Magnetic Contact Sensor

GRI-4402 A Wide Gap Magnetic Sensor

GRI-4402-A Industrial, Wide-Gap Magnetic Sensor

GRI-4701 A Garage Door Magnetic Sensor

GRI-4701-A Garage Door Magnetic Contact Sensor

12VDC Power Supply

Power Supply | 12VDC

Vegapoint 11 Ultra-Compact Capacitive Limit Switch

VEGAPOINT 11 Capacitive Limit Switch

Vegapoint 21 Sensor

VEGAPOINT 21 Capacitive Limit Switch

Live Demo With One of Our Sales Engineers

Let’s make it easy with a live demo and screen sharing.

Set up a one-on-one Q & A with one of our experts. We’ll help you find the best solutions for your next project and walk you through a demonstration.


Low on time? Watch a pre-recorded demo instead:

WebRelay Series Setup and Programming Demo

Related Products…

  • X-401 with Cell, WiFi, and POE icons

    X-401™ | Dual Relay and Input Module

    Price range: $269.99 through $369.99
    The X-401™ combines two SPDT (Form C) relays with two optically isolated inputs in a compact, industrial-grade module. As part of the 400 Series, it features a browser-based interface, embedded GUI logic builder, and open protocols (Modbus, MQTT, SNMP, REST) for seamless integration with SCADA, PLC, and IIoT systems.

    Ideal for applications such as process monitoring, equipment reboot, and alarm control, the X-401™ provides a reliable edge-control solution that eliminates licensing fees and reduces integration complexity.
    • 2 Relays & 2 Digital Inputs
    • Ethernet, Cellular, or WiFi
    • 9-28VDC and/or POE
    Cellular and WiFi are Now Available. Note that X-401CW and X-401W models include cellular and WiFi capability respectively, which allows for more flexibility for your application.

    Global Cellular Coverage. Discuss international cellular options with a sales engineer.

    [frequentlyBought ids="7624,7621,7798,34091"]

    View Product This product has options that may be chosen on the product page
  • WebRelay Wireless™ WiFi-enabled single relay and input module with temperature sensor support

    WebRelay Wireless™ | Single Relay & Input Module

    $219.99
    The WebRelay Wireless™ combines an electromechanical relay and optically-isolated digital input with secure Wi-Fi connectivity, eliminating the need for additional hardware or middleware. Its on-device web server and open API make configuration and integration straightforward, whether you’re extending SCADA systems, deploying remote monitoring, or embedding control into OEM equipment.

    Designed for industrial and commercial environments, WebRelay Wireless™ provides a compact, reliable solution for edge control—without licensing fees or vendor lock-in.
    • 1 Relay (12A 277VAC, 30 VDC)
    • 1 Digital Input (4-26 VDC)
    • Up to 4 Temperature Sensors (-67°F to 257°F / -55°C to +125°C)

    [frequentlyBought ids="7624,7540,7798"]

    View Product This product has multiple variants. The options may be chosen on the product page
  • Single X-410 with Cell, WiFi, and POE icons

    X-410™ | Edge Programmable Controller

    Price range: $299.99 through $399.99
    The X-410™ is a versatile industrial I/O controller with four relays, four digital inputs, and one temperature input, designed for reliable edge control. Its built-in web server allows for efficient deployment and its embedded GUI logic builder enable event-driven or scheduled automation without external software or licensing fees.

    Through peer-to-peer communication, the X-410™ can seamlessly expand with other ControlByWeb® devices, making it an efficient choice for system integrators and OEMs who need scalable, protocol-ready control in demanding environments.
    • 4 Relays & 4 Digital Inputs
    • Up to 16 Temperature Sensors
    • Ethernet, Cellular, or WiFi
    • 9-28VDC and/or POE
    Cellular and WiFi are Now Available. Note that X-410CW and X-410W models include cellular and WiFi capability respectively, which allows for more flexibility for your application.

    Global Cellular Coverage. Discuss international cellular options with a sales engineer.

    [frequentlyBought ids="7624,34491,7540,7798"]

    View Product This product has options that may be chosen on the product page
Shopping Cart