Feature: 1. Multifunction: Tachometer with water temp oil pressure gauge, can display engine speed, water temperature, oil pressure, accumulated hours. 2. Premium Material: Tachometer gauge is made of premium 316L stainless steel, anti fog glass and PC material, can be used for a long time. 3. Excellent Performance: Professional manufacturing, exquisite workmanship, high accuracy, low power consumption, IP67 waterproof and dustproof. 4. Wide Application: Multifunction tachometer can be used in marine, construction machinery, agricultural machinery, automobile modification, etc. 5. Simple Installation: The installation is simple, come with necessary accessories, convenient for using, save your time and energy. Specification: Item Type: Multifunction Tachometer Material: 316L stainless steel, anti fog glass, PCMounting Diameter: Approx. 85mm/3.35inDisplay Range Of Water Thermometer: 100-250℉Display Range Of Oil Pressure Gauge: 0-80psi Display Range Of Tachometer: 0-8000RPM Engine Accumulated Hours: 0.0-99999.9H Protection Grade: IP67, completely waterproof, can work in 1m underwater position; Excellent anti fog function; Input Signal: Stepper motor Backlight Color: RedOperating Voltage: 8-16VDC Operating Current: ≤120mA Operating Temperature: -30℃ to +75℃ Storage Temperature: -40℃ to +85℃. Package List: 1 x Multifunction Tachometer1 x Fixed Support2 x Fixing Nut1 x Wiring Harness1 x User Manual