Exo Terra Thermometer for Reptile Terrarium – Provides Temperatures in Both Celsius and Fahrenheit

This thermometer does not require batteries or a plug, instead, it adheres to the side of a tank or enclosure with a sticky pad on the back. The adhesive is quite strong, but not permanent. If it falls off, customers say they replace the tape backing. There is no reset button, and the thermometer may not be super accurate. Customers have used these on wooden and mesh-walled cages. Overall, opinions on the product are mixed. Some customers report having no issues with the adhesive backing and that it's easy to read. Others report that the thermometers separated from their glue backings within weeks, and they are not accurate. One customer noted that the basic thermometer works well.