Feature: 1. 6 in 1: The functions of tachometer, speedometer, water temperature meter, oil pressure gauge, total mileage indicator, chronograph indicator, and voltage indicator are integrated, greatly saving panel space. 2. Material: Using 316L stainless steel bezel, anti fog curved glass, even in acid and alkali, humid environment can be used normally, double layer anti fog joint, IP67 waterproof, suitable for the marine use. 3. Useful: Ultra wide working voltage design, long term working voltage of 9‑32V, up to 36V, low power consumption, 85mm mounting aperture, powerful and space saving. 4. Practical: 8 color backlight, you can adjust the color through the Set button on the back, easy to check the data at night. Harness connectors with snaps ensure a secure connection with strong vibrate situations. 5. Application: It can be used in engines, generator sets, motorhomes, yachts, fishing boats, ships, construction machinery, agricultural machinery, modified vehicles and other fields. Specification: Item Type: Digital Multifunction GaugeFunction: Tachometer, speedometer, water temperature meter, oil pressure gauge, total mileage indicator, chronograph indication, odometer indication, voltage indication Mounting Hole Diameter: Approx. 85mm/3.35in Tachometer Indication Range: 0-9999RPM Speedometer indication range: 0-999km/h MPH, knots Water Temperature Gauge Indication Range: 40-120 °C (104-248 °F) Oil Pressure Gauge Indication Range: 0-5 bar (0-72.5psi) Total Mileage Indication Range: 0 to 99999.9km mile section Chronograph Indication Range: 0-99999.9 hours Odometer Indication Range: 0 -999.9km/h MPH, knots Working Voltage: 9-32VDC Operating Temperature: -30°C-+75°C Storage Temperature: -40 °C-+85 °C Protection Class: IP67 Input Signal: GPS with antenna Backlight Color: Red, green, blue, white, yellow, peridot, orange, purple . Package List: 1 x Multifunction Gauge1 x Power Harness1 x Bracket2 x Nut1 x Speed Sensor1 x Manual