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888LM motion sensors extremely unreliable

I have three LiftMaster 8500 jackshaft openers in my garage, and all three of them have 888LM Control Panels installed next to each other on the wall next to the garage entry door from the house. Usually, when I walk past the control panels, the associated ceiling lights do not turn on. Sometimes it even requires two pushes of the "light" button on the control panels to get the lights to turn on.

Occasionally the motion sensors on the control panels do turn on their associated ceiling lights, so I know they are paired properly. The sensor switches on all three panels are set to On. 

If just one of these panels were exhibiting this behavior, I'd assume it was broken. But all three of them are behaving this way, and I doubt all three are broken.

Is there any procedure for troubleshooting the motion sensor functionality of the 888LM Control Panels?

Thanks

 
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