INDICATOR No. 4001AN

Used when loud bells, that required their own DC power source were required, in subscribers premises, when connected to Automatic and C.B. systems.  Any original bell would be replaced by the Indicator which consisted of a wooden case with a switch and indicator.

These are wooden cased with a switch and indicator fitted.

The indicator is the drop flap type, which will drop on an incoming call.  The indicator coil is double wound with each winding being 500ohms.

A local DC bell with batteries is provided and the bell is operated by a contact in the indicator.  The bell can be switched on off by the switch on the front panel.  The indicator flap is restored by hand.

An additional condenser of 1uf could be fitted if required (Condenser No. 151).

Comprises:-
1 x Capacitor, M.C. No. 151.
1 x Case No. 33.
1 x Indicator No. 4000A.
1 x Switch, Snap-type, CD 265.

Supersedes Indicator No. 3501AN and Indicator 2201AN.

Diagram - N609.

Drawing - 71023.