The Temp H/C Temperature Controller is switchable between heat and cool. Perfect for plant zone environments, reptile habitats or any other application requiring automatic switching of heating and cooling equipment. The black anodized aluminum enclosure is durable and attractive and will never corrode or discolor from hot, cold or humid environments. Available with 3ºor 7º differential span or 7º Remote Bulb Thermostat. This control operates AC, exhaust fans, evaporative coolers, heaters or other temperature equipment by activating switches, motors, valves or pumps. Temperature range 40º to 110º F (5º to 45º C)