The thermostat has a built-in temperature sensor that can constantly detect the temperature of the room. If the room temperature is lower than our set temperature, the thermostat will start heating. When the heating temperature is sufficient, the thermostat automatically stops heating. The set temperature can be programmed to meet 12 periods of time in a day. This is a great way of making sure the temperature in your home is comfortable for you and your family but also helps to control your energy costs.