If you want to enable your lights to turn on and off at specific times, outdoor lighting timers are useful things to install. The devices connect directly into the transformers and can be connected to one or more light fixtures. The timers can be set so that the lights come on when the sun goes down, go off when the sun comes up or at any other interval you choose. You can set all or some of the lights on the timer and in some cases certain lights can be set for different timers. This ensures that the portions of your exterior you want to remain lighted stay lighted, but you don't have to run all the lights. This will cut your electric costs and keep you out of the doghouse with you neighbors. So if you want your entire yard lit up for a few hours, and then only a smaller part gradually throughout the evening that can be accommodated with the timers. Create the outdoor ambiance you want and enjoy your yard, patio, or deck with lights that are on timers.