The Tado Smart Radiator Thermostat 8-Pack Expansion Set includes eight individual smart radiator thermostats for precise temperature control in various rooms. These devices enable room-specific temperature management through smartphone app control when used with the required Tado Bridge. Each thermostat displays temperature readings directly on the device and allows for remote monitoring and adjustment via a mobile application. The system supports weekly scheduling features for automated temperature management based on daily routines. Installation requires existing thermostatic radiator valves with numbered settings from 1 to 5, and a compatibility check with current radiator valve brands is recommended before purchase. The thermostats offer energy-saving capabilities by automatically lowering the temperature when residents are away, with advanced geofencing features requiring a separate Auto Assist subscription. This expansion pack works exclusively with the Tado Starter Kit system and cannot be operated as a standalone solution. Each unit measures approximately 7.5 cm in diameter with a compact profile that fits standard radiator valves. Constructed with durable ABS plastic housing and reliable electronic components, these thermostats provide consistent performance for home heating management. The battery-operated design ensures flexible placement without electrical wiring, with a typical battery life of several months under normal usage conditions. Temperature adjustment ranges from 5 °C to 28 °C with 0.5 °C precision steps for optimal comfort control. Wireless communication operates on a 868 MHz frequency with secure encryption for reliable connectivity within the home network environment.