Electric lighting installation

Details Electric lighting installation Electric lighting installation

1980-01-10

1982-02-02

Waring, Alvin H.

Communications: electrical

Condition responsive indicating system

With particular system function

340 80, 340508, 340524, G08B 2500

Patent

active

043142389

ABSTRACT:
An electric lighting installation in which is provided at least one central control panel for each light point group, an auxiliary switch which is connected in a parallel circuit with the corresponding local switch, and for each light point or light point group, a corresponding indicator, such as an indicator lamp.
The lighting installation can be combined with an efficient alarm system.

REFERENCES:
patent: 2605342 (1952-07-01), Spurling

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