Wind operated IR detector problem.

[ppppenguin]

While this refers to burglar alarm PIRs, the type of detector is similar in a sensor lamp.
https://www.actmeters.com/advice/five-ca...se-alarms/

More notes here: https://forums.parallax.com/discussion/1...triggering

Obviously a common problem. It's all too easy for something to give a change in infrared reaching the sensor. Be it air currents, foliage etc.