Viega 2874.5US 18050 Thermostat, 24 VAC, 15 W, 1 Heat

A user-friendly, 3-button design allows for easy change of settings. Thermostat can sense either room temperature, floor temperature or both. Adjustable temperature setback function allows for energy savings. Thermostat can control up to 4-powerheads directly or can be connected to a zone/circulator control box. With optional floor sensor, thermostat provides floor high or low limit function for floor protection or floor warming.