IntermaticEK4236S Select Grade Fixed Mount Electronic Photocontrol with Stem, Swivel and Side Lens

Does what it claims to do. Easy to install.

I bought this to use with the front entrance of our subdivision to control the LED large floods that light up the front at night. This is a very well-built photo cell and withstands the weather and works perfectly. Much better than the home building stores offer. I have it wired directly into the power breaker box and it gets the job done!

This was a great replacement. The previous one I had was not working right when I bought my house which was 5 years old so I can't really say how long that it lasted. It stayed on all day so I got this one and it has been working great for several months now. Easy install.

Our HOA recently replaced our old neighborhood lighting system with LEDs. Problem was they were staying on until 10 AM. We had an electrician look at the system and he put in 2 new K4221C switches and that seemed to help but a year later the lights were staying on until 10 AM again. Was going to replace them myself but while reading the reviews I found one that said the manufacturer said to use the EK4236S for LED lights. Ordered one for a test and realized that system only drew about 100 watts so was able to combine the two circuits into one. It's working well and the light go off promptly at dawn. Only problem I had was the instructions say not to mount with the wires up but that was how the old switches were mounted (at the bottom of the switch box). Decided they were worried about collecting water so filled the wire side with silicone and let it dry before I installed it. No problems so far. Took off one star for not warning about the orientation problem. in the product description.

We have LED pack lights on our shop that were staying on well into mid-morning. The sensor was an Intermatic K4221C. Saw another review that mentioned the K4221C is NOT for LED lights & sure enough, saw the same on Intermatic’s website. This sensor EK4236S is the perfect sensor for LED lights. It’s an exact replacement from a wiring perspective & now, can cover the eye & see the lights turn on, uncover & the lights go out. Never saw that with the old K4221C. If you have LEDs, get this sensor & never look back. Arrived timely & well packaged.