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I figured it out but I have to admit I'm feeling a bit sheepish now. Long story short but we'd knocked two rooms into one. The names of the rooms that were pre-programmed were a bit odd and had made an assumption that one of them was the kitchen, and changed the description to "Kitchen". After...

@Bigsosij, yes, its open circuit when the button is not pressed, after disconnecting wires. when pressed, goes from 2.2kOhms when the LED is off to 8.8kOhms when it comes on. @sparkymarka I got the other half to hold the tamper switch down manually whilst I tried come out of engineers menu...

Got it. 8.3 kOhms without the press, but when the tamper button is pressed, it seems to oscillate between 6.5 kOhms and 7.5 kOhms. Thanks.

The back plate is there. Out of interest how does the back tamper mechanism work? I don't see anything on the back of the PCB. Thanks

Hi there. Its wired 4 wires - pic attached. Thanks

Hi there I removed a wired PIR prior to some work on our kitchen and got around to fitting it back a couple of days ago. Since then I've struggled to put the alarm back on, the panel is showing "tamper on input" and it keeps putting me back to the engineers menu. I've checked the wiring and...