1、Water Resistant: The tachometer is made of premium 316L stainless steel bezel, with anti fog and IP67 water resistant rating, suitable for harsh marine environments. 2、Accurate Reading: Driven by a step motor, the tachometer gauge accurately displays the speed and accumulative hour 0 to 99999.9H, with seven color adjustable backlight for night driving. 3、Wide Voltage Design: The tachometer meter is equipped with operating voltage 9 to 32VDC, and a maximum of 36V, low power consumption, long lifespan, high accuracy, and short start up time. 4、Secure Connection: Equipped with a snap on connector, the tachometer RPM gauge ensures stable performance even under strong vibrations, suitable for various engines. 5、Versatile Use: The car tachometer RPM meter is suitable for various engine or generator sets, ships, construction machinery, agricultural machinery, car modification, and so on. Item Type: Tachometer Material: 316L Stainless Steel Bezel Total Hours: 0.0-99999.9H Water Resistant Rating: IP67, with excellent anti fog function Input Signal: Stepper Motor Backlight Color: Red (default), Green, Blue, White, Yellow, Yellow Green, Orange, Purple (color switchable) Operating Voltage: 9-32VDC Operating Current: ≤60mA Operating Temperature: -30℃- 75℃ Storage Temperature: -40℃-85℃ Wiring: 1. Red Wire: +9-32VDC 2. Black Wire: Sensor Signal 3. Orange Wire: Backlight (+) 4. Blue Wire: Power Negative (-) 1 x Gauge 1 x Mounting Base 1 x Power Cord 2 x Nuts 1 x Manual