KEY AND LAMP UNIT No. 5


Mains Failure Alarm panel. Flat panel comprising 2 lamps and 1 "1000-type" key for mounting in suitable "cut-out" in face panel of
PMBX's No. 3/.

Introduced circa 1963.

Drawings - 91959 and 92061.
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Last revised: August 11, 2025
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