Replacing Bad Photo Optical Sensor - Photocell switch installation - Dusk to Dawn

I am replacing a bad 10+ years old photo sensor light switch. The bad sensor' plastic has gotten dark and opaque.

This is photo sensor is for a commercial contactor switch which operates at 277 volts.

I am replacing with a brand new Intermatic K123C photo sensor control (277 volts). If you are replacing a 120 volts system, use the Intermatic K121C. I bought mine from Amazon, if you are looking to buy them, I would appreciate you to click on my link to support my youtube channel. :-)

Here are 2 links to buy Intermatic Photo Sensors:

208 - 277 volts: https://amzn.to/2Bx7tDJ
127 volts: https://amzn.to/38vxaAo

DISCLAIMER: I am not an electrician. I am doing maintenance on my own property. Watch and use this video at your own risk. I will not be held responsible for anything you damage or anyone harmed from watching this video. If you don't know what you are doing or you are working on public / other people's property. HIRE AN LICENSED ELECTRICIAN!

Thank You for watching.

#photosensor #duskdawn #intermatic