ETI Digital Aquarium Thermometer with Min-Max Alarm

This excellent aquarium thermometer sits outside the fish tank whilst the remote waterproof probe is placed inside the tank, indicating temperature over the range of -50 to 70°C.

It features a loud alarm to warn you if your aquarium drops below or rises above a specific temperature you set giving you peace of mind should the heater in your aquarium malfunction.

It's powered by a single AAA battery (included) and can display in either Celcius or Fahrenheit at the touch of a button.

The thermometer can also be used to measure room temperature, it has an 'in' or 'out' of the aquarium setting.

Also featured is a max/min memory function to record the highest and lowest temperatures it has reached.