i4618 FIREX SMOKE ALARM item 21007581 ,same as i4618A , i4718A and i5000A 693829396319 | eBay
Firex Hardwired Smoke Alarm - Firex I4618 i4618
This came with the house. I decided to put a battery in it and it won't even power up. Does this require a hardwire? It was just mounted to the ceiling with
Hardwired Smoke Alarm Firex i4618 | Kidde
Kidde I4618AC Alarm Hardwire Smoke Detector with 9V Backup and Front Load Battery Door | Model i4618, White - Kiddie Ka F Adaptor - Amazon.com
Kidde i4618 (Firex)Hardwired Smoke Alarm with Battery Backup