Grade F1 detection as defined by BS5839-6 2019 is a system containing at least one battery powered detector which has a tamper proof back up battery. All of the below devices are suitable for use in F1 Graded systems.

Grade F1 Systems

Grade F1 detection as defined by BS5839-6 2019 is a system containing at least one battery powered detector which has a tamper proof back up battery. All of the below devices are suitable for use in F1 Graded systems.
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