The Vaillant vSMART 0020223154 is a state-of-the-art, internet-connected thermostat for ecoTEC boilers, providing seamless remote control via the vSMART app. Featuring weather compensation and energy-saving capabilities, it reduces heating bills by optimizing energy usage based on external temperatures. This pack offers easy wall mounting and compatibility with both Android and iOS devices, making it ideal for smart heating management.