![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://images-eu.ssl-images-amazon.com/images/I/61BnGx20M0L._AC_UL600_SR600,600_.jpg)
BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools
![Replacement for 670MBX smoke alarms | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum Replacement for 670MBX smoke alarms | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/67/67483-52304f655126c455a7a5044f38085672.jpg)
Replacement for 670MBX smoke alarms | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum
![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/31Js8GRw5DL._AC_.jpg)
BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools
![BRK 770MBX Ionisation Smoke Alarm, Mains Powered with 9V Battery Backup, Push Fit Base : Amazon.co.uk: DIY & Tools BRK 770MBX Ionisation Smoke Alarm, Mains Powered with 9V Battery Backup, Push Fit Base : Amazon.co.uk: DIY & Tools](https://images-eu.ssl-images-amazon.com/images/I/61WDFkVrQZL._AC_UL600_SR600,600_.jpg)
BRK 770MBX Ionisation Smoke Alarm, Mains Powered with 9V Battery Backup, Push Fit Base : Amazon.co.uk: DIY & Tools
![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://images-eu.ssl-images-amazon.com/images/I/71iRBt2Xn2L._AC_UL600_SR600,600_.jpg)
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 BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/61eckE9ettL._AC_UF894,1000_QL80_.jpg)
BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup : Amazon.co.uk: DIY & Tools
Smoke Alarm | Battery Powered | Battery life up to: 1 year | Linkable | EN 14604 | With test button | 85 dB | ABS | White
![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?auto=webp&s=8e860b3cc4a3a7cb9732ddf0affafa3b4366d797)