The Tado° Smart V3+ Wireless Smart Thermostat Starter Kit in white includes a wireless central heating radiator programmer. This programmable thermostat features a 7-day schedule, wall-mounted square-shaped design, and is compatible with Apple HomeKit and Amazon Alexa for smart home integration. It is powered by AAA batteries and has a display size of 1.57 inches (4 cm). The thermostat offers frost protection, heat-resistant properties, and system switching for auto operation, making it a convenient and efficient choice for controlling your home heating system.