You have to know each of the available methods of setting your lights on a timer and choose the one which best suits your style and needs. What they basically do is let you set an on and off time for the outdoor lighting system.
The most basic outdoor outlet timer is merely a unit that lets you place pegs into slots which designate which times you would like to have the lights turn off and on. A number of the more sophisticated units allow you to actually program custom times for the seven day week, but these style of timers are usually used on lamps and xmas lights.
If you want to get an advanced outdoor light timer system then we suggest going with a photocell timer unit. This technology is able to sense changes in the levels of sunlight directed at it and adjusts the light on and off as it is needed based on sunlight levels. A lot of them even possess the opportunity to customize the concentration of the light up and down saving you even more money when in operation.
Tags: light timer, outdoor lighting system, photocell timer, place pegs, sense changes, timers, xmas lights