Control4 Control4 Wireless Thermostat by Aprilaire - WhiteOverview Specifications The Control4 Wireless Thermostat by Aprilaire was jointly developed with the climate control experts at Aprilaire to deliver a reliable and sophisticated thermostat that consistently delivers the right level of comfort in the most efficient way possible. With advanced presets and scheduling, the thermostat works with your customers instead of forcing them to fit climate control into a rigid schedule. General Information