Dunlop valve, Presta valve are not suitable for this product. Connect the valve to quickly get accurate data. The range has 4 units: 0-150PSI, 0-10Bar, 0-1000KPA, 0-10kg/cm, press on/off button to switch data unit. Schrader valve only! LED light and illumination: When you need to test tire pressure, the LED backlight and luminous nozzle clearly display the reading data even at night or in the dark. Easy to use: one button. Press "ON/ON/OFF" to turn on the pressure gauge, then select the unit you want and connect it to the valve of the tire you want to test. After use, the device automatically turns off after 30 seconds to save battery power. It is very convenient to carry and can be placed on the center console or hung on the car. Ergonomic handle design and non-slip surface fit Versatile: End the frustration at the gas station and check your vehicle's tire pressure yourself! Helps maintain normal tire pressure to reduce tire wear and extend tire life. It also improves vehicle fuel efficiency and operational performance to help you stay safe and take the guesswork out of driving on the road. Suitable for passenger cars, motorcycles, Service: If you have any problems using the product, please feel free to contact us and our customer team will help you.