Review on First Alert ADK 12 Adapter Hardwire by Andrew Agarwal

I had 7 old Fyrnetics smoke alarms that needed replacing with new BRKs and I really didn't want to unscrew the wire nuts and reconnect all 21 connections. then I found this one. They are high quality and work great! Got the whole job done in less than 2 hours! Mainly because I had to move the ladder from room to room and change the ceiling mounting plate for the new detectors. They are simply plugged into the old plugs. I didn't even have to turn off the power. Well! Deducting 1 star because I think the price is a bit high. And the ability to buy a smaller quantity would be nicer.