Greatly appreciated!

Can anybody give me a hand? I need a bladder type air switch replacement, and it has to fit a specific mount - the bulb has a specific size hole, and three small screws go through the three holes around the perimeter.

The Drain Cables Direct Universal switch "looks" like an exact match. Does anyone have one handy that the could measure for me?

My failed one has a base of 3 3/4", a bladder base diameter of 2 3/4", a height of about 1 1/2",
and the distance between the perimeter holes is 2 7/8".