Hey,
It's an eBay one, no lies here,so there was a risk in buying but I don't know how the keyprox would work on one line but not another, surely it'd just be gubbed if it was an eBay broken one?
I've added the module different ways now, once by the procedure in the installation manual, which was to wire it up and exit engineer mode, but I've also added in restarting the panel to try to force it to recognise the device on other attempts.
Also sorry for confusing wording, the downstairs devices are wired on line one which goes from panel to keypad 1 and goes in another direction to the garage, both ends are terminated with 680 ohm resistors. The upstairs is only a keypad which is on AB line 2 and is terminated with a 680ohm.
I'm relatively proficient with the system, it was left over in the house by the previous owner who installed it, it used to be a Galaxy 504 but I changed it out for a Dimension.
Thanks again.
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