NSI Industries TORK TU40 Universal Multi-Voltage Digital Time Switch, Indoor/OutdoorTORK timers give you a simple way to control automation for your home or office. Accurate timekeeping and durable design make this a versatile timer for many applications. Universal Multi Volt Timer: Control air conditioners, water heaters or pumps, signs, lamps, fans and other appliances in automated 24 hour cycles Easy to Use: Simple tab system lets the user program multiple ON OFF times in 15 minute increments or set the timer to an always on state