I have defunct Cal Spas branded ozone generator from 1997, with a J-J (3 round pins) plug. "CalZone" or something.

Does anyone know what voltage this would be off hand? THere's a minimum of markings on the outside--there was a paper tag on the power plug that I copied down but have misplaced tonight.

It ran from a Balboa made C11GD genesis control box, plugged into the side...

It should be 115 V.