I would like to connect my PIR from my unused alarm system to my Raspberry Pi. The PIR has a 12v power supply. 2 connectors that just go to the tamper switch (I wont be using these) and a pair of normaly closed connectors.
I can power up the PIR's no problem, and they seem to work as in, No Movement PIR LED is off. Move and the PIR LED comes on.
However the N/C pair seems to be ALWAYS CLOSED. Im sure that when the LED is on the N/C should be open?? right?
What's confused me also is, the N/C pair appears to be perment closed at the etched circuit level, this cant be correct.
Be great if someone could take a look and advise me please.
Thanks.
Darren.
I can power up the PIR's no problem, and they seem to work as in, No Movement PIR LED is off. Move and the PIR LED comes on.
However the N/C pair seems to be ALWAYS CLOSED. Im sure that when the LED is on the N/C should be open?? right?
What's confused me also is, the N/C pair appears to be perment closed at the etched circuit level, this cant be correct.
Be great if someone could take a look and advise me please.
Thanks.
Darren.
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