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WebRelay-Dual™ is a robust, full-featured Ethernet I/O module with two 5-Amp relays, two optically-isolated digital inputs, and a built-in real-time clock for automated events.

Remote relay control and monitoring the state of the inputs over the network can be achieved using a web-browser, Modbus/TCP, or XML formatted text.

In addition, the inputs can be configured to control the local relays when a voltage is applied or removed from them. The inputs can even be configured to perform this task peer-to-peer, providing remote relay control to any other ControlByWeb™ relay on the network. This feature is perfect for switch extension, and remote event notification.

WebRelay-Dual™ is fully configured in minutes using a web browser. No additional software is needed.

Series III WebRelay-Dual™, 9-28V DC Power Supply Input, 3-11V Opto-Inputs
Model No. Relay Outputs Contact Rating Opto-Inputs Input Range Real-Time Clock *Power Supply
X-301-I 2 (SPDT) 5A @ 28V max 2 3-12V DC yes 9-28V DC
Series III WebRelay-Dual™, 9-28V DC Power Supply Input, 11-28V Opto-Inputs
Model No. Relay Outputs Contact Rating Opto-Inputs Input Range Real-Time Clock *Power Supply
X-301-24I 2 (SPDT) 5A @ 28V max 2 11-28V DC yes 9-28V DC
Series III WebRelay-Dual™ POE (Power Over Ethernet, Connect to 802.3af compliant network):
Model No. Relay Outputs Contact Rating Opto-Inputs Input Range Real-Time Clock *Power Supply
X-301-E 2 (SPDT) 5A @ 28V max 2 3-12V DC yes POE or 5V DC

* These devices are sold as components and do not include a power supply.


  • Up to 100 scheduled events
  • Full calender scheduling
  • Automatic daylight savings and leap year adjustment
  • Synchronize clock with NTP server for precise time keeping
  • Capacitor-backed clock
  • Two electro-mechanical relays
  • Two optically-isolated inputs
  • Automatic and manual control
  • Control and configure using a web browser
  • No software required
  • Customizable web-based control page
  • Settings store in non-volatile memory
  • BASIC script support for advanced functionality
  • Remote services; X-301 can be configured to initiate connection to remote server
  • Email Alerts
  • Event and periodic logging
  • System voltage and internal temperature monitoring
  • Removable 14-terminal connector for easy installation
  • Rugged Din-rail mount enclosure
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