Universal RPM Tachometer: Compatible with various tacho RPM sensors, accurately displaying engine rotation speed. Suitable for cars, trucks, boats, diesel generators, gasoline engines, construction machinery, and agricultural machinery. Multi-Color Backlight Display: Features a 7-color backlight for easy reading in any lighting condition, adding a modern and stylish touch to your vehicle or equipment. Anti-Vibration Design: Utilizes the moving magnet principle for excellent durability and vibration resistance, ensuring accurate readings even in wet or harsh environments. Simple Installation: Requires a 110 mm (4 3/8 in) panel hole with at least 55 mm of clearance behind the panel. Connect the harness securely for reliable operation under strong vibration. Premium Performance: Designed for high precision and reliability, this tachometer delivers consistent accuracy and performance across all applications. Item Type: Boat Tachometer Voltage: DC 9-32V RPM Range: 8000 RPM Fitment: Suitable for trucks, tractors, trailers, cars, RVs, and boats Package Includes: 1 x Tachometer, 1 x User Manual