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_x000D_ Material: ABS_x000D_ Installation Diameter: Approx. 85mm/3.35in_x000D_ Indication Range: 0-4000 RPM_x000D_ Working Voltage: 9-32V (12V/24V)_x000D_ Backlight Color: White or amber_x000D_ Function: Current speed/speed and hour; quick response stepper motor, settable warning and buzzer, with everything needed for installation_x000D_ Operation Mode: LCD display, stepping motor_x000D_ Working Temperature: -30 to +75_x000D_ Storage Temperature: -40 to +85_x000D_ Protection Level: IP67_x000D_ LCD: ODO and trip/hour meter and subtotal_x000D_ Application: For car, truck, boat, diesel generator engine, gasoline engine PackageList: 1 x Tachometer 1 x Power Cord 1 x Manual