BUZZER No. 2B

This is a buzzer contained in a metal casing. They were used on different equipments and came in an assortment of variations.

Buzzer No. 2
25ohm trembler type.

Dimensions - 1.6" x 1.5".

Buzzer No. 2B
25ohm trembler type fitted in the House Telephone systems.

Buzzer No. 2B-1
Buzzer No. 2B fitted to a mounting plate, with Capacitor No. 7533 and a Resistor No. 26GC, 270ohms. Used on the PMBX 2 range and superseded by the Buzzer No. 33A.

Buzzer No. 2B-2
Buzzer No. 2B fitted to a mounting plate, with Capacitor No. 7533 and a Resistor No. 26GC, 270ohms. Used in Telephone Intercom No. 3/1.

Buzzer No. 2B-3
Buzzer No. 2B fitted to an S.R.B.P. mounting plate.

Dimensions - 41mm x 38mm x 13mm.

Diagram - Q531 (Buzzer No. 2B-2).

Drawings (Buzzer No. 2) - CD2063 (Mark 1) and CD1936 (Mark 2).

Drawings (Buzzer No. 2B) - 91524 (2B-1), 91885 (2B-2) and 92664 (2B-3).

Specification - S38 (Buzzer No. 2B Mark 2).