52mm Tachometer PRM Boost Gauge Water Temp Oil Temp Oil Press Voltmeter EGT Gauge AFR Gauge 7 Colors LED Dual Display Car Gauge Feature: 1.High speed Stepper motor with a quick response Please check the video in product page 2.With alarm function, the alarm backlight will flash red light. 3.Clear and bright Adjustable 7 colors Led backlight with digital display 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,digital pointer dual display, high-end racing grade gauge. Tachometer:0~10x1000RPM Boost Gauge PSI: -30~30PSI Boost Gauge Bar:-1~2Bar Water Temperature Gauge: 40~140 Oil Temperature Gauge: 40~140 Oil Pressure Gauge: 0~100PSI Voltmeter: 8~18V Air Fuel Ratio Gauge: 20:1~10:1 Exhaust Temperature Gauge3~13100 Note: After receiving the gauge, the pointer display is not 0 is normal, power on the normal use. There are gauges and gauge stand to choose from, do not buy the wrong. Fitment: It is suitable for 12 volt gasoline vehiclestachometer is suitable for 1~8 cylinder cars Item Picture Package include(Please check pictures below): Tachometer Boost Gauge(PSI or Bar) Water Temperature Gauge Oil Temperature Gauge Oil Press Gauge Voltmeter Air Fuel Ratio Gauge Exhaust Temperature Gauge