Gerry,
I looked up today's equivalent. Mine is over 15 years old. Bought it in the 1990's. I guess that says a lot itself.
Made by Johnson. Pricey too- about $55. It's been hooked up to a hefty 2000gph Rule on a leaky riveted crab boat. I use 10-12 trips a year. And gets its work out frequently on a large pump too.
Here's the West Marine link:
https://www.westmarine.com/buy/johns...88?recordNum=3
Best I've ever heard of. Has marked with two little circles on the side. You place 2 fingers across it and it switches on.
VERY HAPPY WITH IT!