![Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup](https://m.media-amazon.com/images/I/61deRpY1wSL._UC256,256_CACC,256,256_.jpg)
Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup
![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 (
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