Intermatic EJ351 Programmable Security Timer, 120 V, 4 A, 24 On-Off Cycles Per Day This self-learning electromechanical timer switch is simple to use for scheduling desired on/off times for entryway lighting, deck light controls, landscape light controls, attic fans, pumps, hallway lighting, small commercial signage, retail lighting and more Easily program up to 48 ON/OFF events per day with this in-wall timer switch The timer also features a Random setting that can be enabled to provide a lived-in appearance by varying the on/off events slightly each day Compatible with incandescent lights only No neutral wire connection enables easy retrofitting and quicker installation