Intermatic HB880R 15-Amp Outdoor Digital Timer for Control of Lights, Decorations, Pumps or Fans with Astronomic Self Adjust Full feature plug-in timer provides 7-day programming in a weatherproof enclosure, with a total of 14 ON/OFF events Astronomic setting enables timer to automatically adjust event schedules in relation to the changing sunrise/sunset times for maximum efficiency Plugs directly into wall outlet with 24 cable and provides 2 timed and grounded and plug configurations is 5-15 Common usage includes control of LED and CFL lights, irrigation pumps, engine block heater, aerator Random setting can be used with security lighting to provide a lived-in appearance