2" 52mm 7-color high-speed car water temperature oil temperature oil pre-air fuel ratio boost voltmeter EGT meter tachometer RPM car instrument Features: 1. High-speed stepper motor, quick response. 2 .With alarm function, the alarm backlight will flash red. 3. Clear and bright adjustable 7-color LED backlight. 4. The button on the lens can switch the light color you want (please check the product page. Video) Boost gauge, water temperature gauge, oil temperature gauge, oil pressure gauge, exhaust temperature gauge, with sensor (Note: Air-fuel ratio gauge without sensor needs to be purchased separately. Only applicable. Narrow band oxygen sensor. ) Sensor thread size is 1/8ZG. Item includes English installation instructions, high-end racing grade gauges. Tachometer: 0~10x1000RPM Boost gauge: -30~30PSI. Water temperature gauge: 40~140 Oil temperature gauge: 40~140 Oil pressure gauge: 0~100PSI Voltage gauge: 8~18V Air-fuel ratio gauge: 20:1 ~10: 1 Exhaust temperature gauge: 3~13100 Note: (There are meters and meter stands to choose from, dont buy the wrong one.) After receiving the meter, the pointer display is not 0 is normal, it can be used normally when powered on. Accessories: Suitable for 12-volt gasoline vehicles (the tachometer is only suitable for 1-8 cylinder vehicles) Product pictures Package included (please see below. Picture): tachometer boost gauge PSI boost gauge rod water temperature gauge oil temperature gauge oil pressure gauge voltmeter air-fuel ratio Table Exhaust temperature table