X-301 | WebRelay-Dual™ | Remote Relay Controller & Event Scheduler

2 Relays 2 Digital Inputs

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X-401 Dual Relay and Input Module

Check out our new X-401 model!
Better user interface, more features, lower price.
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The series III WebRelay-Dual™ (X-301) is a robust, full-featured, web-enabled, mini Ethernet I/O module with two, 3A relays that can be independently controlled, as well as two, optically-isolated digital inputs. It has non-volatile memory for logging, a real-time clock with support for NTP (time server) synchronization and an advanced full-calendar scheduler which can be used to turn on/off relays at preset times. Its web-based user interface means it can be used right out of the box with no programming required.

The series III WebRelay-Dual has many advanced features including a simple firewall, the ability to initiate a connection to remote servers, BASIC programming, SNMP, email alerts, peer-to-peer communications, internal monitoring, etc.

The series III WebRelay-Dual is ideal for many applications including security, remote control, street sign controllers, shift bell controllers, and much more.


The X-301™ is versatile and has many applications, such as:

Road signs/lights

Use WebRelay-Dual to remotely turn on road signs during hazardous conditions or automatically turn on signs for scheduled events.

Shift change bells

Use WebRelay-Dual to automatically turn on bells/horns for shift changes. If multiple bells are needed, WebRelay-Dual can be “daisy-chained” with other ControlByWeb relays for simultaneous alerts.

Ethernet I/O

WebRelay-Dual is a simple but powerful Ethernet I/O (or web I/O) device. The two relays and two inputs can be used for thousands of applications from event counters, to machine monitoring/control, to extending I/O from a PLC to another building and much more.

Gate Control

Use WebRelay-Dual to remotely control guard gates.

Vacant Living/Working Spaces

Make sure electronic devices are off when nobody is around. Save energy!


Use WebRelay-Dual to lock/unlock doors or at preset times. An electric lock controlled by WebRelay-Dual can be used in conjunction with a mechanical lock to allow access at certain times. Persons with keys can access a building during the day while electric lock is off but access is denied at night when WebRelay-Dual turns on the electric lock. In addition, WebRelay-Dual can send email alerts when the door is opened (anytime or just when the door is locked).


  • Up to 100 scheduled events
  • Full calendar scheduling
  • Automatic daylight savings and leap year adjustment
  • Synchronize clock with NTP server for precise time keeping
  • Capacitor-backed clock
  • Two electro-mechanical relays independently controlled
  • Two optically-isolated inputs
  • Counter Inputs: Inputs 1 & 2
  • 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

X-301 Users Manual (PDF)

X-301 Module Quick Start Guide (PDF)

Original WebRelay Dual (X-WR-2R1-215) Users Manual (PDF)

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  • X-401 with WiFi and POE Icon

    X-401™ | Dual Relay and Input Module

    The X-401™ has two SDPT relays (form C) and two optically isolated inputs. It also shares the same benefits as other 400 series devices, which includes a built-in web server and simple, no-code logic builder. Monitor locks and lights, reboot devices like IP cameras, control bells and alarms, and much more with the X-401.

    2 Relays

    2 Digital Inputs

    WiFi is Now Available. Note that X-401W models include WiFi capability which allows for more flexibility and cost savings for your application.

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