With an oversized backlit display, this water-resistant fuel manager from Faria can be easily read day or night. This simple-to-install unit displays fuel flow in gallons or liters per hour. Displays total or trip fuel used, calculates fuel remaining, and includes a selectable low fuel alarm. Both total log and trip log are saved in memory at power down but can be reset at any time. 8V - 16.5V DC operating voltage. Mounts in standard 2-1/16" diameter gauge hole.