Used on subscriber push button VF signalling systems.

Introduced around 1963 and available only in Grey.

For more information see Telephone No. 728.

May have also been known as the Telephone No. SA 4184.

Circuit diagram - N824.

Specifications - S812 and S814.

Telephone SA 4184 - picture dated 1963
Telephone SA 8184 - internal view

The model above is dated February 1965 and was installed in Leighton Buzzard.

This was called an experimental telephone and differs from the above picture in so much as it has
the information that would have been on a dial label printed on the case.

Additional information

Tele 724LMk 1y9/63 


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Last revised: October 30, 2022