Well since this is a MS16 thread I will piggyback a question.
I have an outside MS16 that seems to have lost IR sensitivity.
It is now almost completely oblivious to any warm body movement.
Unit is in protected location (no rain, snow etc.) on an unenclosed front porch.
It does not get direct sun.
No plants, trees, etc. in the field of vision.
Postion and location of the unit has not changed.
There is no dirt, dust , spider webs, leaves, etc etc etc. outside or inside the unit.
New batteries...twice.
I can't see the PIR sensor's silicon substrate changing do to aging, so wonder if op-amp bias has changed due to resistor aging.
I'm just going to replace the unit with a new one. Not worth trying to troubleshoot, but just wonder if anyone else has had similar issue?
