Function display: Water temperature: 25-120; Oil pressure: 0.0-10.0bar; Engine hours: 0.0-99999.9HInput parameters: Tachometer adjustable speed ratio: 1.0-360.0; Pressure sensor parameters: 10-184 ohm; Cooling water temperature parameter: 301-22 ohmworking environment: Working voltage: 9-32VDC; Working current: less than 120mA; Working temperature: -30-70; Storage temperature: -40-85Waterproof rating: IP67Backlight: blueConnection method:1. Black wire: negative pole of power supply (-)2. Red line: 9-32VDC (+)3. Blue line: RPM signal4. Yellow line: water temperature signal5. White line: oil pressure signaltype: 0-6000RPMSize: 85MMMaterial:Stainless steel + plasticcolour:Silver Frame + Black SurfacePackage Contents:1 * speedometerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.