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Advantages of Installing a Photocell Sensor

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Photocell Sensor

Photocell Sensor

My Garden Light Did Not Turn On

A few days ago, my garden light did not turn on by itself. That was the first time it failed to auto switch on at dusk. I had a photocell sensor installed on the garden light to regulate the on-off timing. When it failed to turn on when the sun set, I immediately concluded that the photocell sensor was spoilt.

I went to inspect the connections, and it seemed straight forward enough to connect the three wires. So off I went to buy a replacement. I did the connection job in no time, and with a smile on my face, covered the gadget with the supplied black plastic cover and waited for the light to come on. What a disappointment. There was no light. Then it dawned on me that I had wasted my money and effort in changing the photocell sensor. The light itself was spoilt! This time I couldn’t do it myself. So I had to engage an electrician to fix up the new light and reconnect the photocell sensor.

My newly installed garden light with the photocell sensor on the left side.

My newly installed garden light with the photocell sensor on the left side.

It works!!


What is photocell sensor

What is a photocell sensor? It goes under many different names, such as photocell switch, photocell sensor switch, photocell auto switch, photocell auto light control, light sensor switch, photocell sensor circuit, and dusk-to-dawn photocell sensor. Photocell sensors also come in many shapes and sizes.

These photocell sensors are installed outside the house to control the on-off timing of the lights that are connected through their circuits. Lights of this nature are usually installed outside the house. So when the sun sets, the photocell sensor will activate the “on” switch and turns on the light. Likewise, when the sun rises, the photocell sensor will trigger the “off” switch. For in-house lighting control, usually a timer switch is installed, where you can set the exact timing for the on-off functions.

If you do not intend to leave the light on for the whole night, you should not instal the photocell sensor. You should instead instal the timer switch where you can control the "off" time.

Three advantages of installing photocell sensors

These are the three advantages of installing photocell sensors :

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· Convenience. You don’t have to remember to switch on or off the light by yourself. The photocell sensor will do the job for you, automatically.

· Security. Once it’s dark, the light turns on by itself. This will be a deterrent for any intending intruders.

· Economy. The light is only turned on when it’s dark; and most advantageous in that you need not have to remember to turn off the light yourself. Once there is sufficient light from the rising sun, or when dawn breaks the light is automatically turned off. This saves you from having to pay for the wasted power usage should you forget to switch off the light, if there is no photocell sensor installed.

What about timer switch

Having completed this article, a thought just came to my mind. Why not write a "twin" article on "Advantages of installing a timer switch".

You can read it HERE:

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