The Hive Active Heating Thermostat SLT3D is a programmable thermostat that is powered by batteries, specifically AA size batteries. It features a touch screen display and is designed for wireless installation. The thermostat is compatible with Hive's smart home system and is programmable, allowing users to easily adjust their home's heating settings. Made in the United Kingdom, the Hive Active Heating Thermostat is a convenient and energy-efficient choice for controlling heating in a home.