2-grounded outlets/use with indoor devices requiring a?grounded connection. 24 hour repeating cycle turns outlets on and off same time daily. Programmable in 30-minute time intervals/provides 48 setting options in a 24 hour period. Reverse ground-pin placement/when plugged into wall receptacle, unit accepts most right-angle and transformer plugs. Angled housing design makes unit easy to read and program. On/off override switch on top for convenient one-touch programming bypass. Compatible with CFL, LED, fluorescent and incandescent bulbs