![BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/61BnGx20M0L.jpg)
BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools
![Need replacement smoke alarm. Current model (BRK 670MBX) discontinued. Do I *really* need to replace all (as per alarm manufacturer guidelines)? Can I not just wire up generic alarm to the circuit ( Need replacement smoke alarm. Current model (BRK 670MBX) discontinued. Do I *really* need to replace all (as per alarm manufacturer guidelines)? Can I not just wire up generic alarm to the circuit (](https://preview.redd.it/9r2qstsfu2781.jpg?width=640&crop=smart&auto=webp&s=9311447e3c5cd4d0d6cd921937d69aa6aa67dc0d)
Need replacement smoke alarm. Current model (BRK 670MBX) discontinued. Do I *really* need to replace all (as per alarm manufacturer guidelines)? Can I not just wire up generic alarm to the circuit (
![BRK 670 MBX Smoke Alarm -Mains And Battery -NO LONGER MANUFACTURED EXP- 06/04/30 £75.00 - PicClick UK BRK 670 MBX Smoke Alarm -Mains And Battery -NO LONGER MANUFACTURED EXP- 06/04/30 £75.00 - PicClick UK](https://www.picclickimg.com/9DcAAOSwMq5lUL9v/BRK-670-MBX-Smoke-Alarm-Mains-And-Battery.webp)