Honestly don’t know why I’m finding this so hard to get my head around but here goes.
Our house was built 2012. The smoke alarms need replacing in 2022 & one is broken.
It has main powered, battery back up smoke alarms that are linked. The wiring block is in the ceiling so I have the theory we can just buy 4 linkable smoke alarms and wire them into the wiring in the ceiling but dh thinks we need to buy the EXACT same smoke alarm.
Any thoughts?.