Heavy Duty 40 amp PWM

We used to use these Heavy Duty PWM's all the time, but the company disappeared for years. We recently were able to locate the new manufacturer and have been testing these out with great results. Heavier heat sinks and solid electronics allows these to easily handle even larger HHO generators (12-30 volts).  It has both amp dial and frequency dial, but we run ours at the stock 100hz, at around 22-25 amps, and it powers our Large H2Xtreme without getting hot. You can add a fan to pull heat from the unit if you plan on running it for long durations.

Worth the upgrade for sure.

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