Feature: 1. HIGH COMPATIBILITY: The 85mm tachometer is compatible with various RPM sensors and effectively displays engine speed. Suitable for a wide range of applications, including cars, trucks, boats, generators, gasoline engines, construction machinery, and agricultural equipment, ensuring high performance and precision. 2. CLEAR DISPLAY: With 7 color backlight and hour meter, this gauge provides you with clear and simple reading. Enhance visibility and add a stylish touch to your vehicle or machinery. 3. EXCEPTIONAL DURABILITY: Designed for durability, this tachometer performs reliably in various environments. It can read high definition gauge data even in harsh marine conditions. 4. EASY INSTALLATION: The tachometer requires a panel cut out of just 85mm (3 3/8 inches), making installation straightforward. It is important to ensure that there's adequate space (55mm back panel depth) for a seamless fit in your vehicle or equipment. 5. PROFESSIONAL DESIGN: Engineered for precision, the 85mm gauge offers outstanding performance and high accuracy in readings. Its professional manufacturing ensures it meets rigorous industry standards. Specification: Item Type: 85mm TachometerVoltage: DC 9-32VTachometer: 3000rpmOil Pressure Gauge: 0-10barWater Temperature Gauge: 40-120°7 Color Backlight: Backlight Sequence: Red (default), Green, Blue, White, Yellow, Cyan, Purple, AutoAuto: Switch once every minute, cycling through the above sequence Fitment: Suitable for Truck Tractor Trailer Car RV Boat . Package List: 1 x Tachometer 1 x User Manual