Fun fact. Most houses have a door bell button on the external frame of the door, usually low voltage, just need a proper adapter. And if you live in a place like me some idiot before you cut the doorbell wires off flush on the outside and glued a wireless doorbell over the top. So, there’s already 2 wires in my door frame that aren’t used. I personally just need to tone them out to find the source, put a different power supply on the other side, then pull the little stubs of wire back inside the wall then to the door jamb through the small holes I suggested earlier (not saying it would be easy but it would be less work than pulling new wires). Put a couple springs with contacts on the end in the holes, then any time the door is shut, the latch contacts one spring, deadbolt on the other. Edit: I’m in the US and what I have said about the door bell wire location is typical here. Also, for long runs like that it’s usually low voltage ac, the old security system in my home runs on 24v ac for example.
2 Likes