![]() ![]() Motion sensors work similarly, only with heat. When contact is made with more photons, it increases the electrical flow, which can then trigger actions. Photocells work with a resistor that changes its conductivity based on how many photons are hitting it. A motion sensor activates the light when it detects something moving within its field of view. What’s the difference between a photocell and a motion sensor?Ī photocell detects ambient light so lights turn on when it gets dark.
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