BRK 670MBX Mains Powered Ionisation Smoke Alarm If you are reading this then you are probably in the same position that I was. You are looking for a replacement for one that has malfunctioned and found out that they are no longer available and as they are mains and wired together they all need to be the same. Was taken off a working system, was working fine and still has until 18-Dec-2027 until it expires.
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