Frienda 12 Pcs White Digital Fridge Thermometer Waterproof Refrigerator and Freezer Max/min Record Function LCD Screen Refrigerator Thermometer with Hook and Magnetic Back for Home (Button)

They work as advertised.

These work and seems to keep ok temperature, at least enough for my curiosity's sake. My complaint is that every so often they default back to Celsius and I have to tap the temp button to get them back to Fahrenheit. But, next time i check it, it's on Celsius.

Super easy to use and the health inspector loved it.

Excelente, como se describe, todos funcionando bien

Buyer beware. Multiple units of this product will fail when put to freezing temps. They will turn back on at room temperature. If you need this to monitor units around 0 degrees F, this is not the product you want to buy.

The battery is fine, but the units themselves have a very short lifespan.

Several were dead upon arrival. But the ones the work are decent

They are being used in our farrowing rooms to monitor night time temperatures and and they work great showing the highs and lows. Can easily change a battery when needed and the batteries can be purchased as well (2036 I think)