I wired it as described below, with my multimeter probing voltage between
GND and my power supplying providing different voltages:
Now to my question: the device seems to trigger properly, with sensitivity increasing with supplied voltage and
sense line being pulled correctly to
GND, but it does not recover, meaning the LED doesn't turn off and the
sense line doesn't go back to
VCC once I move the sensor away from the triggering metal plate.
What is wrong?
Using a GM328 transistor tester to test the component this what is reported:
I thought about requiring a pull-up resistor on the
sense line, but didn't help either...
Is the sensor faulty or what?
It seems the sensor has no trouble recovering from active state if the supply voltage is
5 V turning back inactive once I move the activation plate a couple of mm away fro the activation point, which seems to be at 6-8mm from the sensor surface.
So the question is what makes the sensor latching when supply voltage is relatively high