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Having to dispose of a bunch of frozen food because of freezer failure is a gut-wrenching experience. A freezer thermometer will alert you to a drastic change in your freezer’s internal temperature and help assure that you never have to deal with such a hassle.

This thermometer runs on just a single AAA battery. iapsales

Probe Style

This type of freezer thermometer mounts to the exterior of your freezer or on a wall or shelf nearby. A probe attached to a cord monitors the freezer temp. While you need to be near the freezer in order to hear the alarm, you don’t have to worry about a wireless signal being compromised, and fewer batteries are required than with a remote unit that consists of a sensor and base.

Dual sensors allow you to monitor the temperature and humidity of multiple locations. ORIA


A sensor is placed in the freezer and a signal is wirelessly transmitted to a base unit that alerts you when the temperature rises above a pre-set limit. This type of thermometer is ideal for freezers located in a garage or shed.

The manufacturer of this Bluetooth thermometer offers a WiFi router (sold separately) that keeps you connected to your freezer anywhere you have an internet signal. SensorPush


Get alerts and check the status of your freezer directly on your phone with a Bluetooth-enabled freezer thermometer. Data is gathered even when you’re away and pushed to your phone when you’re within range again.