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Thanks, I had intended to put something like a voltage regulator on the speaker wire to drop the voltage down to 3.3v (from 12v) so that it's suitable for the Pi. If there's a trigger lead, then of course I guess it would be better to use that.

we have an ex ADT alarm system installed. As its no longer monitored And the system doesn't have an external bell box, I would like an easy way to know if the alarm has sounded when armed. I have a couple of raspberry pi and wondered if anyone had wired one of these up to receive notifications...

I just wanted to again say thanks for the help. I've fitted a new battery and moved the keypad today without any issues.

Thank for the information . We definitely have a yellow adt box on the outside of the house, and it it definitely now wired to the main box, which makes me think it's simply a dummy box with a blue flashing light. After moving the keypad, will all of the wireless sensors still work or will...

Sorry, I've also just noticed, the alarm system is not a G3, it says Honeywell Galaxy 2-20 on the box.

Thanks for the response but I don't think I completely following what you mean about the power to the external sounder. Do you mean the box on the outside of the house? In our case this is wireless and would me getting up a set of ladders (which isn't a huge deal mind). I'm guessing that should...

We had a Honeywell Galaxy G3 wireless alarm system fitted by ADT around 7 year or so ago. We have the engineers code but not longer use ADT's monitoring. The control panel has started to display "+BAT MIS" and after a Google search it seems the battery will need replacing. We've had this done...

We've had this combi boiler fitted for the last 7 year or so and never really experienced any issues. However a few month ago we started seeing some problems. The first, we have a mixer tap in the bathroom which when turned to hot no longer gives off any hot water. The boiler simply isn't...