Review on 🔍 Weewooday 10-Piece AM312 Mini Human Sensor Module: IR Pyroelectric Infrared PIR Motion Detector, 2.7V-12V DC, -20°C to 60°C by Brad Blake

So these little devices put out 3.3 volts when motion is detected. wait a minute. No, no, not with motion detection! These are not motion sensors! They can spot hot objects like a cup of coffee, or if the ambient temperature isn't the same as the Arizona desert I'm in, I'm sure they'll be good at spotting people. When it's 101 degrees outside they don't work very well. BTW, that's 3.3 volts for a high-state output, and the output current is "You'd better have some kind of FET input amplifier because these things can't screw up". Regardless of whether you have 12 volts or 5 volts, the output level is 3.3 volts. Also for use in cooler environments. And this memory of earlier times for the on state or the peak performance is nonsense.