Dual, 3-prong outlets can be used to control one or two low voltage transformers. Unit is weatherproof and must be mounted in a vertical position with the outlet facing downward and at least 2ft. above the ground in outdoor use. With the light sensor and countdown timer your control your outdoor lights according to the schedule you set – on, off, dusk to dawn, on at dusk and off after 2, 4, 6 or 8 hours, repeat schedule daily. Wireless remote control so you can control, make changes from any location within 100ft. of unit. Remote signal works through walls, windows and doors.