Lucky Reptile Thermometer 

This product really is the start of the essential product list needed for any terrarium. This analogue thermometer should be placed directly in the terrarium at the point which temperature should be read. Adhesive tape at the back of the device allows for quick and easy installation.

It is recommended to have two thermometers, one at the hot end close to the heat source, and one at the cool end. This will ensure a proper thermal gradient throughout the whole terrarium is met.