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Luckily the previous owners had written the code (they’d chosen the same as the original alarm code I think) down in the various paperwork they left with the house, so I gave it a go last night. I haven’t changed the phone numbers yet, but I can get into the menu to do it… so it looks like the...

Thank you for the reply. That makes sense, and I do indeed have a Menvier SD1 unit too. I’ve found the instruction manual online, and it includes how to change the telephone numbers. However the first step is to ‘key in the current passcode’. Will that be the same current passcode as the actual...

First time poster, I really hope someone can help… I recently moved into a house with a Pyronix Sterling 10 home alarm system. It was installed a few years ago and is in fully working order. However, it still has the previous owners telephone contact numbers programmed into it (the numbers the...