The Vaillant vSMART Room Thermostat Smart Control Pack 0020197226 is a programmable thermostat designed for central heating radiators. With 7-day programming, digital control style, and temperature sensor technology, it offers efficient heating control. Its sleek white design and wall-mounted feature make it a stylish addition to any home. This smart thermostat, compatible with Vaillant products, allows for system switching with auto control and features a digital display for easy operation. Made of plastic and powered by AAA batteries, this thermostat is a convenient and reliable choice for maintaining a comfortable home temperature.