How Does An Outdoor Light Sensor Work

By | July 16, 2020

How Does An Outdoor Light Sensor Work?

Outdoor light sensors are a common sight in many homes and businesses. They are used to automatically turn on lights when it gets dark and turn them off when it gets light. But how do these sensors work? Let's take a look.

Outdoor light sensors use a device called a photocell to detect the amount of light present. Photocells are made of a semiconductor material that changes resistance based on the amount of light that hits it. When the light level is low, the photocell's resistance is high. As the light level increases, the photocell's resistance decreases.

The photocell is connected to a circuit that includes a relay. When the light level is low, the photocell's high resistance causes the relay to open. This keeps the lights off. As the light level increases, the photocell's resistance decreases, causing the relay to close. This turns the lights on.

Some outdoor light sensors also have a timer function. This allows you to set the lights to turn on and off at specific times, regardless of the light level. This can be useful for security purposes or for simply making it easier to remember to turn the lights off.

Outdoor light sensors are a convenient and energy-efficient way to control your outdoor lighting. They can help you save money on your energy bills and make your home more secure.

Here are some additional benefits of using outdoor light sensors:

• Increased security: Outdoor light sensors can deter potential burglars by making it more difficult for them to approach your home unnoticed. • Energy savings: By automatically turning off the lights when it gets light, outdoor light sensors can help you save money on your energy bills. • Convenience: Outdoor light sensors can make it more convenient for you by automatically turning the lights on and off when you need them.

If you are looking for a way to improve the security, energy efficiency, and convenience of your outdoor lighting, then outdoor light sensors are a great option.


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