Thermometer by Syndesmos which is an ideal choice to keep you informed about the current temperature in a specific area. You can place it indoors in any room of your space. Monitoring temperature can be important for various reasons, such as knowing at any time the exact performance of a heating or cooling system or simply staying informed about the prevailing conditions. Additionally, it is applicable in spaces like libraries, where knowing the exact conditions is crucial for protecting your collections.
You can install it on the wall, but in any case, you should place it in a spot with as neutral conditions as possible. It should not be placed near a heating unit or air conditioner as the readings you get will not be indicative.