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 (
Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup
BRK 86RAC Smoke Detector Replacement and Additions (UK) - My Blog