Olympus OM winder release

[BetterSense]

My Winder 2 has what looks like a socket for an electrical cable release. What kind of plug fits in this socket? I would guess that shorting the contacts would cause the winder to fire; is that correct?

[Q.G.]

I forget but believe it is 2.5 mm (else 3.5), but certainly a (mono) jack plug.
And yes: all you need is to create a short between the poles.

[MattKing]

It is 2.5mm.

Much, much more info here (click on the Motor Drive Group link):

http://olympus.dementia.org/eSIF/om-sif.htm