Dave Plowman (News) wrote:
In article ,
Donwill wrote:
I'm not sure what it's called but I will try and describe it's
description & function .

A standard approx 85mm square white plastic surround, to screw into a
standard wall box.
Has a 3 position switch, centre off, momentary action, what I would
call "press to make, release to break".
Press up to make a contact, press down to make another contact. (change
over) Spring release to centre off position.
Or possibly two buttons mechanicaly connected.
This is required to manualy open and close a motorised vent.

It's difficult to search without a name for this type of switch.

Fleeting or non latching. Basically the same as a car electric window
switch?

I'd be surprised if you can get one already in a standard plate easily -
but you could buy the switch itself from RS components etc and fit it to a
blank plate of your choice.

Do you know, I have been beating my brains out all night, thinking of
where I have had and used that sort of switch all night. Obvious, isn't it?

Dave