This unit has a very high quality LCD micro-voltmeter installed on the front panel. It has the same circuit as the other O2 enhancers, as well as an MAP enhancer AND a switch with LED to control the Hydrogen generator relay.
PLEASE NOTE: All enhancers that contain a switch for the Hydrogen Generator are meant to control a RELAY that sends power to the Generator. They are NOT meant to have high current running through them. This is the safest way to send power to the Generator. You may purchase a relay in our web store.
