The Hive Thermostat V3 Hubless Active Heating Control System is a smart combi boiler that offers programmable 7-day control with a wireless wire configuration. It features a square white thermostat shape with temperature sensor technology and various control styles including Wi-Fi and app control. The system is powered by AA batteries.This wall-mounted thermostat from Hive is designed for frost protection and system switching with 1 heat stage, making it a convenient and efficient choice for heating control in the United Kingdom. Comes with Thermostat and combi boiler receiver but hub is sold separately as they are locked to the original household.