This 30 minute in-wall timer will ensure your bathroom exhaust fans, basement lights, and bathroom heat lamps turn Off after a set amount of time, saving money and bulb use. Simply turn the dial to the desired running time (30 minutes maximum), and the connected light or appliance will shut Off at the set time. Installation is easy - just install in place of existing wall switch (fits standard or decorator wall plate). Compatible with compact fluorescent bulbs. Ratings: 125V (volt) AC (alternating current), 60Hz (hertz). 20A (ampere)/2500W (watt) Resistive, 8A/1000W Tungsten, 5A/625VA (volt-ampere) Fluorescent. 15FLA (full load amps), 90LRA (locked rotor amps).