Features 1. Applications: Suitable for a wide range of stepping instruments, and can be used in engine generator sets, ships, construction machinery, agricultural machinery, car modifications, and more. 2. IP67 Protection: IP67 waterproof and dustproof rating with curved glass and anti-fog design, providing reliable performance in harsh weather conditions. 3. Advantages: Low power consumption, long service life, high precision. Ultra-wide operating voltage range of 9-32V DC, with surge tolerance up to 36V. 4. Quality Materials: Constructed with 316 stainless steel, PVC, and ABS materials, suitable for use in acidic, alkaline, and humid environments. 5. Includes Manual: Comes with a detailed manual that clearly explains installation, wiring, and operational functions, ensuring easy setup and use. Specification Item Type: RPM Tachometer Material: PVC + ABS + 316 Stainless Steel Light Color: 7-Color Backlight (Adjustable) Signal: Speed Pulse Range: 0-8000 RPM Working Voltage: 9-32V DC Installation Diameter: 85mm / 3.35in (white body 85mm without white cover); requires at least 55mm / 2.17in clearance behind the dashboard Operating Temperature: -30C to +75C Storage Temperature: -40C to +80C Applicable Scenarios: Universal for automobiles, engines, boats, RVs, yachts, construction equipment, and other machinery. Package List 1 x RPM Tachometer 1 x Manual 1 x Cap