ABS Material: The housing of this gas boiler thermostat is made of ABS material, which is not easy to wear and is very durable. Wall-mounted controller: This thermostat kit contains wall-mounted controller that can be connected via RF frequency connection and 512 manifold that connects to a gas boiler or underfloor water heating system. Wide application: This gas boiler thermostat can be used in hotels, villas, apartments, office buildings, hospitals, schools, shopping malls, stadiums, recreational areas. LCD digital display: This gas boiler thermostat comes with LCD digital display for clear and simple readings. Voice control available: This thermostat can be controlled remotely via a designated APP, or by voice control with for Tmall Genie or for Xiaodu.