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A photocell is a light-sensitive electronic component that changes its resistance based on the amount of light it receives. It is commonly used in automatic lighting systems, photometers, and light meters to detect and measure the intensity of light.

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1y ago

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You can buy 6v photocell dusk to dawn switches from Acetek photocells


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the roof is slanted so you will need to put your photocell on the side of the roof where the sun is shining


How do you reset photocell?

To reset a photocell, first, turn off the power supply to the device for about 10-15 seconds. Then, restore the power, allowing the photocell to recalibrate itself. If it has a reset button, press it according to the manufacturer's instructions. Finally, ensure that the photocell is clear of any obstructions or dirt that might affect its operation.


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What happens if gamma rays falls on a photocell?

Gamma rays typically have enough energy to ionize atoms in the photocell material, releasing electrons. This can result in a current being generated in the photocell, which can be used to detect the presence of gamma rays.


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How do you replace a photocell on your outdoor light post?

# Turn off the power to the lamppost circuit at the breaker box. # Unscrew the mounting screws holding the lamp in place, and pull the lamp fixture from the post. Remove the wire nuts, and use the circuit tester to be sure the power is off. # Disconnect the wires to the fixture and the photocell. # Disconnect the locking nuts that hold the existing photocell on the post, and remove the photocell. If your lamp doesn't have a photocell, you'll need to drill an access hole in the post to install one. # Install the adhesive foam ring (provided with the photocell) around the mounting hole. # Run a bead of silicone sealant around the photocell where it will press against the interior of the lamppost. # Push the sensor through the mounting hole, and secure it with a locking nut. # Add silicone sealant inside the lamp fixture at any point where moisture might leak through to the photocell. # Connect the white wires from the power supply, lamp, and photocell together. Secure the connection with a wire nut. Connect the black photocell wire to the black power supply wire in the same manner. Connect the black lamp fixture wire to the red photocell wire and secure the connection with a wire nut. # Reainstall the fixture on the lamppost.


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