The Mini LCD Digital Thermometer Humidity Meter White is a compact and practical device that accurately measures the temperature and humidity levels in your ant colony. Its easy-to-read LCD screen displays the current temperature and humidity levels in Celsius. With its small size and simple design, it is easy to use and can be placed anywhere in your ant habitat. This meter helps you maintain the ideal conditions for your ants to thrive and stay healthy. Keep your ants happy and healthy with the Mini LCD Digital Temperature Humidity Meter White. Works with 2 x Button Cell Batteries LR44 (AG13). Size: L46mm x W28mm x H16mm. Duracell Plus batteries last about 2 years.