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The X-300™ is two products in one package:

Temperature Logging

First, the X-300™ is a powerful web-based temperature logging instrument that allows you to monitor and control temperatures via an IP network. Up to 8 temperature and/or humidity sensors can be connected at a time.

Temperatures can be viewed in real-time using a web browser. In addition, the X-300™ has many advanced features including email alerts, relay control, a BASIC interpreter, and much more.

Web-Enabled Thermostat

Second, the X-300™ is a 7-day programmable web-enabled thermostat. Users can adjust and set temperatures for heating and cooling systems and view current indoor and outdoor temperatures from any web browser.

As a web thermostat, it provides an attractive control web page that works great on desktop computers as well as smart phones such as the iPhone® and other mobile digital devices.

Setup is simple; There is no app to download, no subscription to buy, no software required, and no programming necessary for setup or use.





For more information including software screen shots, application data etc. see - Full Product information at web page


WebRelay Part Numbers

Advanced Web-Enabled Temperature Monitoring & Thermostat

Model: X–300 Please see below

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Relays: 3 (3A 28VAC, 24VDC)

Temp: 8 (One temp sensor included)

9-28VDC (One power supply included)


Relays: 3 (3A 28VAC, 24VDC)

Temp: 8 (One temp sensor included)



Relays: 3 (3A 28VAC, 24VDC)

Temp: 8 (One temp sensor included)

POE Class 1 (0.44 to 3.84 Watt) or 5V±5%