BELL No. 17C

Trembler bell on Fire systems with Bell-Gong No. 5 (3 inch).

Double bell coil - resistance of each coil:-
Bell No. 17A - 50 Ohms.
Bell No. 17B - 250 Ohms.

Found in the GPO Rate Book - 1928.


GPO Engineering Instructions on Fire Systems


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Last revised: January 18, 2016