The WiFi Thermostat 563 operates either a multi-stage conventional or heat pump HVAC system, a fan, and up to two accessories, including a humidifier, dehumidifier and ventilator. When connected to the Internet, the Watts(R) Home mobile allows the thermostat to be controlled remotely. A 7-day, 4-event programmable schedule is available and the early start feature automatically learns to heat up the room by the scheduled time. An Away mode is quickly and easily accessed to provide energy savings when the space is unoccupied. An optional floor sensor can be installed to enhance comfort and protect floor coverings when operating radiant floor systems.