Multi-function 52mm car gauge for oil press air fuel ratio RPM with 7-color display2" 52mm 7-color high-speed car water temperature oil temperature oil pre-air fuel ratio boost voltmeter EGT meter tachometer RPM car instrument<br> Features:<br> 1. High-speed stepper motor, quick response.<br> 2 .With alarm function, the alarm backlight will flash red.<br> 3. Clear and bright adjustable 7-color LED backlight.<br> 4. The button on the lens can switch the light color you want (please check the product page. Video)<br> Boost gauge, water temperature gauge, oil temperature gauge, oil pressure gauge, exhaust temperature gauge, with sensor<br> (Note: Air-fuel ratio gauge without sensor needs to be purchased separately. Only applicable. Narrow band oxygen sensor. )<br> Sensor thread size is 1/8ZG.<br> Item includes English installation instructions, high-end racing grade gauges.<br> Tachometer: 0~10x1000RPM<br> Boost gauge: -30~30PSI.<br> Water temperature gauge: 40~140<br> Oil temperature gauge: 40~140<br> Oil pressure gauge: 0~100PSI<br> Voltage gauge: 8~18V<br> Air-fuel ratio gauge: 20:1 ~10: 1<br> Exhaust temperature gauge: 3~13100<br> Note: (There are meters and meter stands to choose from, dont buy the wrong one.)<br> After receiving the meter, the pointer display is not 0 is normal, it can be used normally when powered on.<br> Accessories:<br> Suitable for 12-volt gasoline vehicles (the tachometer is only suitable for 1-8 cylinder vehicles)<br> Product pictures<br> Package included (please see below. Picture):<br> tachometer<br> boost gauge PSI<br> boost gauge rod<br> water temperature gauge<br> oil temperature gauge<br> oil pressure gauge<br> voltmeter<br> air-fuel ratio Table<br> Exhaust temperature table