Features 1. Weatherproof: IP67 waterproof and dustproof rating with curved glass and anti-fog design, providing protection against damage from harsh weather conditions. 2. Long Durability: Constructed from 316 stainless steel, PVC, and ABS materials, ensuring long-term use even in acidic, alkaline, and humid environments. 3. High Accuracy: Features ultra-wide working voltage design with a long-term operating range of 9 to 32V DC, up to a maximum of 36V. Low power consumption with high measurement accuracy. 4. Wide Application: Compatible with a variety of engines and machinery, suitable for engine/generator sets, marine vessels, construction equipment, agricultural machinery, vehicle modifications, and more. 5. Vibration Resistant: Secure snap-in harness connector ensures stable performance under strong vibration conditions. 6. Easy Installation: Includes a detailed product manual outlining installation, wiring, and operational instructions. Specification Item Type: Tachometer Material: ABS + PVC + Stainless Steel Backlight Color: Red, Green, Blue, White, Yellow, Cyan, Purple (adjustable) Signal Type: Speed Pulse Measurement Range: 0-7000 RPM Working Voltage: 9-32V DC Installation Diameter: Approximately 85mm (3.35 inches), requiring at least 55mm (2.17 inches) of clearance behind the dashboard Operating Temperature: -30C to +75C Storage Temperature: -40C to +80C Applicable Scenarios: Suitable for automobiles, engines, boats, RVs, yachts, engineering machinery, and similar applications. Package List 1 x Tachometer 1 x User Manual 1 x Screw Cap