Protect your property and family from freeze damage 24/7, no matter where you are, with wireless freeze sensors.

What is a Freeze Sensor?

The freeze sensor detects a furnace failure in a home or business by alerting you when the surrounding temperature drops below 45 degrees Fahrenheit.


Does it use batteries?

Yes. Like all of our sensors, the freeze sensor is wireless and battery powered. It uses a single lithium battery, which lasts 5 to 8 years.

What is the temperature and monitoring range of the freeze sensor?

The freeze sensor can detect temperatures as low as 10 degrees Fahrenheit to 120 degrees Fahrenheit. It monitors and open area of 900 square feet.

When will the sensor send a restore signal after being tripped?

A 55°F to 60°F temperature is necessary after the sensor is tripped for device to send a restore signal.

Where should I place the freeze sensor?

The sensor needs to be within 100 feet of the control panel so that the signal is strong and reliable. If there are many thick walls or structures between the sensor and the control panel, it may need to be even closer. Locate the sensor in an area that is likely to become cold first in the case of a furnace failure. Put the sensor in an interior wall where it won’t be disturbed by much air movement (like gusts of wind coming through a door) which may cause false alarms or simply tamper with the accuracy of the sensor’s ability to detect temperature changes.

Do not:

  • Locate the sensor in the same room as a furnace, water heater, or any other heat source that may stay warm after the furnace fails.
  • Locate the sensor on an outside wall or near the basement floor.
  • Place in areas with excessive metal or electrical wiring. This may inhibit the sensor’s signals from reaching the control panel.
  • Place the sensor in an area where it will be exposed to moisture.
  • Place the sensor in an area that will exceed the temperature range of the sensor (10-120 degrees Fahrenheit)


How can I test my freeze sensor?

If you are not sure whether or not your sensor is working, you can test it by placing the sensor into the freezer until it triggers an alert. Remove the sensor from the freezer as soon as the alert is triggered. Remember that the sensor will need to warm up to 55 degrees again before it will read a normal condition.