|C. B. S. Floor Switchboards
Central battery signalling switchboards are ideal as satellite exchanges in areas where main installations are C.B. or automatic. They are economical compared with full C.B. and give better operating facilities than magneto.
These switchboards are fitted throughout with our totally enclosed type of indicator.
Double positive supervision is provided.
Milliampere-meter to detect leakage of current on the lines. A 22-Volt battery of large type primary cells will operate these switchboards.
N 440 shown pictured to the right.
Taken from the Ericsson catalogue, edition 26
Last revised: October 12, 2019