![]() ![]() Much like LEDs, photocells are made from semiconductors, primarily cadmium sulfide. There are tons of different photocells on the market, but they all rely on the same principle. ![]() They’re a great way of reducing energy consumption since they’re designed to turn lights off during the day when artificial lighting isn’t necessary. They are most commonly found outdoors in parking, roadway, and security lighting. In simple terms, they are light detectors that automatically turn lights on at dusk and off at dawn. Photocells are light-sensitive modules used to determine the on/off status of lighting based on ambient light levels. Photocells, dusk to dawn sensors, light-dependent resistors, whatever you call them, they all do the same thing. Keep reading to find out everything you need to know! What Is Photocell? Just because you use LED bulbs does not mean you have to miss out on the convenience of dusk to dawn sensors. If you’re the type of person who likes the lights to be on when you arrive home from work in the evening, this blog post is for you. ![]() Therefore, LEDs require a different type of photocell than conventional bulbs. Because LEDs run at such a low voltage, this small current causes interference, flickering, and premature degradation. Standard photocells require a small current to operate during the daytime when the light is off. The founding principle behind photocells has been around for longer than a millennium, so does it work with modern LED bulbs? The answer is photocells, also known as dusk to dawn sensors. But surely they don’t work on a timer either since they switch on and off at slightly different times every day? Of course, they aren’t operated manually. Have you ever wondered how street lamps seem to know exactly when to turn on? They’re never too early or too late… they light up just as the sun sets and the sky blackens. ![]()
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