If you've ever returned home to find the contents of your refrigerator or freezer to be of suspicious condition, you'll appreciate this thermometer-alarm.
It has two wireless sensors (for your fridge and freezer, or two freezers, etc.) and a display unit that records the lowest and highest temperatures reached for each sensor. This lets you quickly confirm whether temperatures reached an unacceptable level while you were away.
The display also has an audible alarm function to notify you when temperatures exceed the maximum range you preset.
The sensors, with a signal range of up to 75' (23m), clip to a glass or wire shelf and also have detachable suction cups. The display unit can be wall mounted or attached to any metal surface with its integral magnet.
Reads temperatures in a range from -40°C to 70°C (-40°F to 158°F).
Sensors are powered by two AA batteries and the display unit by two AAA batteries you supply. Lithium batteries are recommended for the sensor used in the freezer.