Surf pi clicker pro

[dbanner]

Does anyone know about this variation of the surf pi pro? I have a schematic for it but can't find any other info.

[dbanner]

Take a look. Its the first time I've come across such a variation.

[BC547]

Maybe a version dedicated for diving, where the headphones are replaced by a relay ( clicker ) ?
D1 across the headphone connection might point in that direction

[württemberger]

https://youtu.be/EndFS7YjIYU

Here is a "Sound-Example" from the Clicker.

There is always a Background "Click" like a Geiger-Counter.

[dbanner]

Very cool. Click click click...