Features: 1.Specification: 85mm tachometer comes with 0?4000RPM measurement range, LCD display, a black dial, silver 316L stainless steel bezel, high transparent lens and luminous red pointer. 2.Accurate Display: Adopt stepper motor drive pointer, precisely display the engine speed with high indication accuracy and relatively simple driving and control. 3.High Performance: IP67 waterproof and dustproof, corrosion resistant, durable to use even in acid, alkali and humid environments, and the curved glass features good anti?fog effect. 4.Low Power Consumption: 9?32V ultra?wide long?term working voltage, and maximum up to 36V (1 minute). Come with the harness connector to achieve better and secure connection, so as to work normally even under strong vibration. 5.Wide Application: For generator sets, ships, construction machinery, agricultural machinery, automobile modification, etc. and for 12/24V Car, Truck, Boat, Diesel Generator Engine, 1?8 Cylinder Gasoline Engine. Specification: Item Type: Tachometer Material: ABS Installation Diameter: Approx. 85mm/3.35in Indication Range: 0-4000 RPM Working Voltage: 9-32V (12V/24V) Backlight Color: White or amber Function: Current speed/speed and hour; quick response stepper motor, settable warning and buzzer, with everything needed for installation Operation Mode: LCD display, stepping motor Working Temperature: -30 to +75 Storage Temperature: -40 to +85 Protection Level: IP67 LCD: ODO and trip/hour meter and subtotal Application: For car, truck, boat, diesel generator engine, gasoline engine PackageList: 1 x Tachometer 1 x Power Cord 1 x Manual