Active eye and wind

[Bill59]

Does anybody have trouble with trees and shrubs blowing around and triggering the sensor?

[Don N]

Yes, I had trouble with tree and shrub movement.  I tried to narrow what the active eye could "see" by placing black tape over part of the lens.  That helped somewhat.  But it also limited what I wanted the active eye to "see."  For best results I had to relocate the motion sensor where it didn't "see" the tree and shrub movement but yet covered the area that I wanted it to "see."

[Bill59]

Are they infrared? If so, shouldn't they see heat movement?

[bitman]

I have an ms16a on the back deck as a dog has returned sensor.
I put it up at the start of last winter after the patio furniture was stowed away.
This spring I put up the furniture which has an umbrella/table combo. The collapsed umbrella twitched and
waved in the wind right in front of the sensor consti-triggering it. The umbrella has no wrap around strap.
Having one may help but for now we are without the umbrella because the dog return sensor is too useful.

[dave w]

Are they infrared? If so, shouldn't they see heat movement?

Yes they are infrared. I have the same blowing problem also. I think it is just leaf shadow moving across the sensing field, interuping the background infrared level. Thats my theory and I'm stickin to it. 

[Bill59]

I guess that's just the way it is. But Dave, I think it's your aftershave! (Sorry had to do it)!

[dave w]

I am really having a difficult time convincing my wife it is the after shave. And, I exercise every Monday through Friday morning with an arm lift and a sit-up....