85MM RPM Tachometer Gauge 3 In 1 Multifunction Tacho Meter with Water Temp Oil Pressure Hour 3000/4000/6000/8000 RPM Tacho MeterSpecification:-Item Name :85mm 3 IN 1 Tachometer Gauge- Backlight :Blue- Voltage: 12V / 24V- Oil pressure: 0.0-10.0bar- Cooling water temperature: 25-120- Engine accumulated hours: 0.0-99999.9H- Engine speed: 0-3000/0-4000/0-6000/0-7000/0-8000RPM- Tachometer fit for Car /Truck/ Boat /Diesel Generator Engine /Gasoline EnginePackage Includes:1x 85mm 3 IN 1 tachometer1x Connecting wire1x Installation instructionsConnection:1. Black wire: negative pole of power supply (-)2. Red line: 9-32VDC3. Blue line: RPM signal4. Yellow line: cooling water temperature signal5. White line: oil pressure signalFunction Display :~Engine Speed: 0-6000RPM,~Water Temperature: 25-120~Oil Pressure: 0.0-10.0bar~Engine Total Hours: 0.0-99999.9H~Adjustable range of tachometer speed ratio: 1.0-360.0~Pressure sensor: 10-184 Ohm~Water temperature Sensor: 301-22 OhmInput parameter :- Adjustable range of tachometer speed ratio: 1.0-360.0- Pressure sensor parameters: 10-184- Cooling water temperature parameter: 301-22