Save energy with this programmable timer by controlling the hours your lights are on. Never worry about remembering to turn on or off your lights again. Program up to 12 settings for all your light displays. There is even a safety setting that makes the timer look as if it is turned on or off even if it isn't. The timer also adjusts for day light savings time as well as sunrise and sunset. It has 24" cord and two places to plug lights in. Uses one A battery which is included.