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[louis51]

I've had an EagleEye Motion detector working for over 2 years. Only problem so far is the milky white sensor cover only last about a year outside then starts to crack / fall apart.  I tried to get a new cover, gave up and just purchased another EagleEye unit.  It lasted a year.  I'm getting ready to put in my third one and decided to try and position it viewing through a window or glass door instead of putting the unit out in the elements.  It will not work through the glass window / door?   Will not sense anything.....   Anything I can do to make it work through glass?  I even tried the unit without the sensor cover....

[Puck]

Infrared motion sensors will not work through glass. The white plastic cover is a Fresnel Lens, so it will not work (as designed) without that either.

I am surprised that your lens are cracking after a year. Could your sensors be leaking and letting rain inside that sometimes freezes? I can't think of anything else that would make the plastic crack.

[x10challanged]

Exposure to direct sun/UV will deteriorate the cover and pretty much anything plastic.  If this is the issue in your case you may try to move the sensor where it is not exposed to direct sunlight 10 am - 3 pm during summer months if that is possible for you.  I deal with this problem a lot here.

[louis51]

Thanks, that's what I figured.   I was carefull to position the unit in the shade, where it's mounted it get's no direct sunlight all day.  It does get hot, we live in the Calif. Coachella Valley, it's already in the 90's and expected to be 100 today.  Do you know if I can purchase replacement lens covers or do I just buy a new unit every year?  Thanks.

[x10challanged]

I personally have not seen a replacement lens offerred, I'm south of Houston, TX so I understand the sun issues all too well.  I didn't consider just heat as an issue but may be?  Your sensor wouldn't happen to be around a swimming pool where it could catch the reflected UV directly off the water?  I am reaching here, just a thought I had since I have problems with a sensor outside my pump house.
Perhaps someone else in the forum can answer if heat alone can mess up a motion sensor lens.

[louis51]

Nope, not around water, it's in a courtyard but it gets pretty warm, even in the shade where it's located.