BUZZER No. 21
Used on Telephones Intercom No. 1 & No. 2  and situated in Plugs No's 2404A & 4001A.

Resistance - 50ohms + 4ohms + 1000NI.

Ericsson Part No. N3341.
 
BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: February 28, 2021

FM