![]() The photocell can control when the lights come on but the timer can turn off lights before the photocell senses daylight. Using photocells and timers together is a popular method where all night lighting is not desired. Timers are available in both twenty-four hour and seven day versions. The timer can be programmed to turn on lights as darkness falls and switch the lights off at a designated time or whatever schedule is desired. However, with the advent of LED bulbs this may be a non issue since LED bulbs has an extensive life and are energy efficient. ![]() This option allows better control and may save bulb life and electricity. TimersĪnother option for most homeowners is the installation of a timer. When photocells are used alone, the only option is for the lights to turn on at dusk and off at dawn since the outside level of light controls when the lights come on Security is enhanced since lights will be on at home when arriving after dark even when your home is vacant. This can be a disadvantage if you are looking for control from inside your home or an advantage when there is no one inside your home to turn the lights on. Photocells do not require manual control. Conversely, the dawn of daylight will switch the power off. Photocells sense the ambient light in the environment and communicate with the system to power on when the sun sets. Ambient light is the amount of natural light or available light. ![]() Photocells use a switching system to block or provide power to the transformer based on the amount of ambient light. The transformer is an electrical component that takes the main voltage electricity of the house and changes it into a much lower voltage. Photocells are electrical devices that communicate with the transformer. The simplest automatic outdoor lights method is a photocell. You choose what is best for you based upon your lifestyle and objectives. However, photocells and timers have distinct benefits and disadvantages. Manual control of outdoor landscape lighting is not practical and would be more of a nuisance if having to switching the lights on and off were the only option. Both automatic outdoor lights options save energy by automatically turning lights on at dusk and back off at dawn or at a designated time if lights are on a timer. Photocells and Timers are two main options for controlling the power of outdoor lighting.
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