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ControlByWeb Original WebRelay-Quad™ 4-Relay Modules

ControlByWeb Original WebRelay-Quad™ 4-Relay Modules are designed to provide a fast, easy, and cost-effective way to remotely control equipment over an IP network, including the Internet. These modules feature a simple user interface and a no-code logic builder, making them extremely user-friendly programmable logic controllers. The WebRelay-Quad modules are ideal for manual or automated relay control via the included open REST API or by using Modbus TCP/IP communication. CWB Original WebRelay-Quad 4-Relay Modules are versatile and fit an array of applications, including industrial control, security lock systems, remote control, and remote reset.

Features

  • Built-in web server for setup and remote relay control from web browser
  • No special software or device drivers required
  • XML status and control pages make communications with custom software applications simple
  • Can operate as Modbus TCP/IP secondary device
  • 4x independent, 28VAC, 24VDC, 3A relays (SPDT)
  • On/off and pulse modes
  • Rugged DIN-rail/wall-mountable enclosure
  • Includes 14-pin industrial terminal connector
  • Power supply options
    • 9VDC to 28VDC
    • Power over Ethernet (PoE) (802.3af) or 5VDC

Applications

  • Pump and motor control
  • Lighting control
  • Security lock systems
  • Industrial control
  • Remote reset
  • Security
  • Remote control

Overview

Infographic - ControlByWeb Original WebRelay-Quad™ 4-Relay Modules

Additional Resources

Publicado: 2026-08-07 | Atualizado: 2026-08-10