Features: 1. Specification: 85mm tachometer features a measurement range of 0-4000RPM, an LCD display, a black dial, a silver 316L stainless steel bezel, a high transparent lens, and a luminous red pointer. 2. Accurate Display: Utilizes a stepper motor drive pointer to display engine speed with high precision and simple driving and control. 3. High Performance: Rated IP67 for waterproof and dustproof, resistant to corrosion, and designed for durability in acidic, alkaline, and humid conditions, with curved glass providing excellent anti-fog properties. 4. Low Power Consumption: Operates on a wide voltage range of 9-32V for long-term use, with a maximum of 36V for 1 minute. Comes with a harness connector for a secure connection, ensuring proper operation under strong vibrations. 5. Wide Application: Suitable for generator sets, vessels, construction machinery, agricultural machinery, automotive modifications, etc., and compatible with 12/24V vehicles including cars, trucks, boats, diesel generator engines, and 1-8 cylinder gasoline engines. 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: Displays current speed/hour; quick response from stepper motor, with adjustable warning and buzzer, and all installation essentials included 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: Suitable for cars, trucks, boats, diesel generator engines, and gasoline engines Package List: 1 x Tachometer 1 x Power Cord 1 x Manual