Wi-Fi Freezer Alarm & Refrigeration Monitoring Systems

Engineering & Marketing International

Monitor temperature and/or humidity with a ControlByWeb® module (See recommended products below) – Receive text messages or email alerts when a temperature threshold is exceeded for a user-specified amount of time. Log and plot the temperature history, and more.

Connect temperature/humidity sensors to any ControlByWeb device that supports temp/humidity monitoring.
Power device and connect it to your local network. (Watch Video)
Install temperature and/or humidity sensor probe in a freezer or refrigerator. (View PDF Guide or Watch Video)
Monitor your refrigerator or freezer from a computer or smart phone from anywhere in the world!


  • Monitor temp/humidity sensors
  • Local & remote, real-time monitoring
  • Log temp and humidity
  • Email/text notifications
    And much more…


Walk-in Freezer Monitoring Example

Temperature sensor probe connected to the FridgeAlert to monitor and log freezer temperatures.

In this example above, a temperature sensor probe is connected to the FridgeAlert. The FridgeAlert then communicates with a local network. You can access its built-in web pages by connecting a computer to the same local network and you can remotely monitor the temperatures from those web pages.


Text/Email Temperature Alerts
Sends a text message or email alert if the high/low temperature threshold is reached.

Log Temperature Data
Periodically log temperature data which can be sent daily via email. Perfect for maintaining compliance with FDA requirements to maintain food temperatures in coolers and freezers. No more manually logging temperature data by hand!

Free Mobile App
You can also use our free, CBW-Mobile app to access the FridgeAlert and any other devices on one central control panel.

No Cloud Services or Monthly Fees
ControlByWeb products are stand-alone, independent devices. There are no monthly fees, and no additional software to install.