GPO/Strowger Ringing Supply Module. 12V DC in 50V AC Out. Three Ringing Frequencies. 17/20/25 Hz. Ren 3.

The ringing current is continuous. It does not supply ringing cadence.

These small resin encased modules are designed to produce perfect ringing current at around 50 Volts. (sine wave).

PIn Configurations are as follows (print this listing off, there are no instructions included).

V(-) = Negative 12 Volts DC only.

INH = Inhibit ringer. Not used as the ringer outputs as soon as power is supplied.

V(+) = Positive 12 Volts DC only.

F1/FO 17/20 Hz frequency.

02 = Ring Current AC Common.

01 = Ring Current AC @ 25 Hz.

Ideally, use V- V+ for power in and 02 & 01 for ringing current out.

The module is of rugged construction and can be used as PCB mount or soldered wire connections.

This is new, old stock, and each unit will be tested on despatch.

A 12 V DC input supply is all that is needed.

Please note that the modules are made in Israel. Due to the current situation in the area the price has increased slightly. The modules are in stock with us in the UK.

Genuine reason for sale, scaling down after 48 years of collecting telephone equipment. Watch for many, many more items.

Will post quickly using Royal Mail tracked (no signature required). Postage costs reflect actual charges, shame on those who inflate postage costs.

Please do not hesitate to message me. Mark.