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Removing a BRK 670MBX or 670MRL Ionisation Smoke Alarm - YouTube
370MBX - Dixon 370MBX Mains Ionization Smoke Alarm with Alkaline Battery Back Up. Features: LED operating indicators, mounting base plate, battery included, and alarm pause button | Voltage: 230 volt AC (50-60...
Replacing the Battery in a BRK 670MBX Ionisation Smoke Alarm - YouTube