Photo Sensor Outdoor Light Wiring

By Della Gracia | February 15, 2020

Essential Aspects of Photo Sensor Outdoor Light Wiring

Photo sensor outdoor lights automatically turn on when it gets dark and turn off when it gets light. This can be a great way to save energy and add security to your home. If you're thinking about installing photo sensor outdoor lights, here are a few essential aspects to keep in mind.

Types of Photo Sensors

There are two main types of photo sensors used in outdoor lights: cadmium sulfide (CdS) and photodiodes. CdS sensors are less expensive and more common, but they are also less sensitive to light. Photodiodes are more sensitive to light, but they are also more expensive.

Location of the Photo Sensor

The location of the photo sensor is important for determining when the light will turn on and off. The sensor should be placed in a location where it will receive direct sunlight during the day. If the sensor is placed in a shaded area, the light may not turn on until it is completely dark outside.

Wiring the Photo Sensor

Wiring the photo sensor is a relatively simple process. The sensor will typically have two wires, a black wire and a white wire. The black wire should be connected to the hot wire from the power source, and the white wire should be connected to the neutral wire. The sensor should also be grounded.

Testing the Photo Sensor

Once the photo sensor is wired, it is important to test it to make sure it is working properly. To test the sensor, simply turn on the power to the light and see if it turns on when it gets dark. If the light does not turn on, check the wiring to make sure it is correct.

Troubleshooting Photo Sensor Problems

If you are having problems with your photo sensor outdoor light, there are a few things you can check.

  • Make sure the sensor is clean and free of debris.
  • Make sure the sensor is receiving direct sunlight during the day.
  • Check the wiring to make sure it is correct.
  • If the sensor is still not working, it may need to be replaced.


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