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Found 1 result

  1. ultrasonic
    Old 41A control, one zone, with shunt lock

    From the album: OLD alarm Equipment details

    I knew this great starter panel as a 41A control used / installed in the 1970s, Smart metal box, with hinged lid to conceal unit, 12v external power supply, one cct, plus shunt cct. Indicators, Green Clear, Red Fault (key locked by a solenoid) Yellow Call engineer to reset if auto Dialer fitted. Bell test removed power from SAB to sound external bell. Yale key switch.

    © Ultrasonic

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