Feature 1High Quality Material: Made of stainless steel and ABS, can be used in acid, alkali and humid environments, durable and have a long service time. 2IP67 Waterproof And Dustproof: IP67 waterproof and dustproof grade, with curved glass, antifog, no need to worry about the damage bad weather may cause. 3Excellent Performance: Low power consumption, long life and high accuracy. With ultrawide working voltage design, longterm operating voltage is 9 to 32V,maximum can up to 36V. 4Easy Installation: Easy to install, with a detailed manual, will clearly describe the installation, wiring and use functions. 5Widely Use: Suitable for a full range of stepping instruments, can be used for car, engine, boat, RV, yacht, engineering machinery, etc.Item Type: TachometerMaterial: ABS+stainless steelLighting Color: 7 color (adjustable)Signal: Speed pulseRange: 0-4000 RPMOperating Voltage: 9-32V DCInstall Caliber: Approx. 85mm/3.35in, and make sure there is at least Approx. 55mm/2.17in space behind the dashboardOperating Temperature: -30 - +75Storage Temperature: -40 - +80Fitment: Suitable for cars, engines, boats, saloon cars, yachts, engineering machinery, etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Tachometer1 x Instructions1 x Screw Cap