Sprill OGO HHO Pro'E30 Intelligent PWM

Constant Current PWM, adjusts amps with keeping the voltage constant, critical for HHO dry cells run at a reduced amp rate. Unit seems solid and it is the best priced unit I have found for this application which comes with the control and display modules with on off button which is nice to have In the cab. Cheers and happy HHO adventures! ;)

This is a great concept, however it is concerning when the device starts smoking and will not power off when it should.

It worked for about 100 miles into my cross country road trip, then stopped turning on. The company sent a replacement while I was on vacation. I will install it when I get home

As a product it is great. As a consumer it’s not the best as it puts off a super high pitched scream. It’s very annoying and I’ve heard it messes with the radio signal. That part I cannot confirm yet but will update later on that. It so far has done what I’ve wanted it to do for an hho application.

Poor craftsmanship not as advertised quit working after about 30 minutes.

The system work just by starting you car and like magic it turns on