Waterproof Car Boat Tachometer Gauge 3000,4000,6000,7000,8000 RPM Marine Tacho Meter with Hourmeter 85mm Tachometer ToerentellerSpecification:- Installation Diameter :85mm - Display Range :3000RPM/4000RPM/6000RPM 7000RPM/8000RPM - Voltage: 12V / 24V - Operating Current:100 MA - Speed Ratio: 1~300 adjustable - Functions: current tacho/RPM and hour - Operation mode: LCD display, stepper motor - Tachometer fit for Car /Truck/ Boat /Diesel Generator Engine /Gasoline EnginePackage Includes:1 Piece Tachometer 1 Piece Flexible Flat Cable 1 Piece Rubber Plug 1 Piece ManualFeature :- 316L stainless steel for long-term use even in acid-base, humid environment. - IP67 waterproof and dust-proof grade. - High temperature resistance, drug resistance, oil resistance. - With curved glass( with anti-fog function). - High transparency curved PC, and curved glass formed a double anti-fog structure, anti-fog performance is much higher than single-layer glass coating anti-fog agent. - High brightness LED backlight, high brightness and long life. - The meter has its own alarm signal, without additional alarm signal provided by the sensor.