Wireless dial thermostats provide total freedom of thermostat placement to ensure the best control of a radiant heating system. The thermostat can send a demand for heating up to 98 ft. to a wireless base unit (through normal construction). The thermostat includes a blue ring around the dial that illuminates when the set temperature is adjusted. An orange LED will illuminate when there is an active heating demand or a low-battery status. Set point temperature range is adjustable from 41 deg F to 96 deg F, and default temperature is 68 deg F. The thermostat uses two standard AAA batteries (included).