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What is the difference between a human presence sensor and a human body sensor? I changed 4 of them before I stopped turning on the lights blindly.
The lights in the bathroom went off when I was sitting still, and the lights in the study turned off after a few minutes of typing on the keyboard. I thought the sensor was broken at first. It took three dismantlings to figure out that the human body sensor only recognizes large movements, while the human presence sensor even counts breathing as "presence". This article explains the differences, actual measured results and four installation pits by room. ...
