The PEM-HG is able to generate up to 350 cc/min of Hydrogen with purity better than 99.9995% and pressure up to 90 psi That is adjustable by user via Keypad The PEM-HG use long life electrolytic cell with polymeric membrane (PEM) using distilled water. No Lye or acid solutions are used. The on-board CPU automatically check for internal leaks and constantly control the operating parameters such as water quality – Tank water level – H2 over pressure – H2 over flow and produce alarm if any parameter is out of range and write on LCD the alarm source. Total working hour and total produced hydrogen is saved and showed on LCD that will be used for periodic service.