Temporary fix move ribbon cable about a bit or push it in should resolve the keypad issue short term
Otherwise change the panel its old hat now
I would concentrate on the panel before bell box though , link tr or t at. Panel to 0v temporarily while you try and fix keypad issue
Better to scrap it though
What dialler are you using ? , normally has a daily or weekly alert to keep SIM going
And too it up every 6months or so unless you got regular false alarms
Cheaper just to get a virgin SIM £5 until July, monthly rolling, then I think it's goin up a bit
But that's if you have sia sent via your dialler you need the contract SIM for that
Well seems what your doing is ok, and as above when you connect the battery it will siren as cover is open , this was me too ed above, if cable is ok and bellbox is ok and your panel isn't faulty then when you connect the battery the bell will sound until you close the lid and close the tamper
So does this mean every electronic piece of equipment should have there engineers access unlocked for jp to openly to have?
Not talking about what's available in internet
So from washing machines to tv's to alarms fire etc etc as long as there is a fee paid everyone should hand over the access to the engineers menus, coolio
Should be fee based , and based upon another maintainer asking for it and they bill the customer and pay you?