The Hive V4 Mini Nano 3 Smart Thermostat requires a professional installation and has a memory function. It is powered by AAA batteries and can be controlled using a smartphone, tablet, or laptop. This white thermostat is compatible with Apple HomeKit, Google Assistant, and Siri, allowing for easy integration into your smart home system. With a sleek design and advanced technology, this Hive thermostat offers efficient climate control for your home.