Smoke Alarm Compatible Adapter Plug

The First Alert BRK ADF-12 Smoke Alarm Adapter Plug easily connects competitive alarms without rewiring. This product is compatible with Firex Smoke Alarms and saves time and installation costs when retrofitting existing homes or apartments. First Alert designs and creates safety products that preserve and protect the things that are the most important to you, from your children and family to your home and the priceless memories stored inside.|Compatible with the following firex models: 406, 4518, 4618, 5000, 484, 4480, 5700 and 499|Compatible with the following BRK models: 4120, 5919, 2002RAC, 7010, SC6120B, HD6135FB and RM3|Maximum of only 12-units (except model G-6) may be interconnected|Ideal for retrofit applications