SEM G1

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Need to identify a few tings on a really old SEM Gen1 but can\'t find documents for it. Can anyone point me at them or post them please? Specifically..What is JP12 in the corner and next to the KA/KB and the white 4 pin header? Ta very muchly.

[slychiu]

Comfort 1  manuals including SEM can be found herehttps://www.cytech.biz/product_details.php?item_id=312

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That doesn\'t show the 2 pin connector labelled JP12.Nor does it mention anything about it

[slychiu]

JP12 ?
can you show a photo?

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Here\'s a picture...

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Your help appreciated?

back on site tomorrow and could do with knowing what is wired to this pin location?

[slychiu]

JP12 on a very early SEM should be Tamper. There should be marking TAMP and COM on the PCB, it should not be unmarked. Perhaps the text is hidden in the photo. The PCB should be almost 20 years old

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Yes, 20 years old is probably about right.
As you can see in the photo, there are no markings on the PCB other than \'JP12\'.

[slychiu]

Try opening the input, see if there is tamper alarm