BUZZER No. 18
A buzzer used on Cordless Switchboards and Units, Transfer, Intercom No. 1A (HES).

The buzzer mechanism is mounted in a moulded Bakelite base and cover.

Buzzer No. 18A - 10 to 24 volts working - Resistance 500 ohms.
Buzzer No. 18B - 2 to 4 volts working - Resistance 25 ohms.

Drawing - 62798.

How to adjust the Buzzer No. 18
 

 
 
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Last revised: September 22, 2024

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