Replacing the Battery in a BRK 670MBX Ionisation Smoke Alarm - YouTube
Removing a BRK 670MBX or 670MRL Ionisation Smoke Alarm - YouTube
Replacing the Battery in a BRK 670MBX Ionisation Smoke Alarm - YouTube
Removing a BRK 670MBX or 670MRL Ionisation Smoke Alarm - YouTube
BRK 670MBX Mains Powered Ionisation Smoke Alarm | Safe Fire Direct
Amazon.co.uk:Customer reviews: BRK 670MBX Ionisation Smoke Alarm, Mains Powered with 9 V Battery Backup
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BRK 670MBX Mains Powered Ionisation Smoke Alarm for sale online | eBay
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 (