52mm 7 Colors Tachometer RPM Meter Water Temp Oil Temp Oil Press Voltmeter Boost Gauge Air-Fuel Ratio Gauge EGT Gauge Car Gauge Feature: 1.High speed Stepper motor with a quick response. 2.With alarm function, the alarm backlight will flash red light. 3.Clear and bright Adjustable 7 colors Led backlight. 4.The button on the lens can switch the color of light you want. Please check the video in product page Boost gauge, water temperature gauge, oil temperature gauge, oil pressure gauge, exhaust temperature gaugewith sensor.( Note: Air-fuel ratio guage without sensor, suitable for narrow band oxygen sensors only.) The sensor thread size is 1/8ZG. The goods include installation instructions in English, high-end racing grade gauge. Tachometer: 0~10x1000RPM Boost Gauge: -30~30PSI Water Temperature Gauge: 40~140 Oil Temperature Gauge: 40~140 Oil Press Gauge: 0~100PSI Voltmeter: 8~18V Air Fuel Ratio Gauge: 20:1~10:1 Exhaust Temperature Gauge: 3~13100 Note: There are gauges and gauge stand to choose from, do not buy the wrong. After receiving the gauge, the pointer display is not 0 is normal, power on the normal use. Fitment: It is suitable for 12 volt gasoline vehiclestachometer is only suitable for 4/6/8 cylinder cars Item Picture Package include(Please check pictures below): Tachometer Boost Gauge Water Temperature Gauge Oil Temperature Gauge Oil Press Gauge Voltmeter Air Fuel Ratio Gauge Exhaust Temperature Gauge