12 in 1 Gauge: Replacement for Chevy 433 MHz, and equipped with tire pressure gauge function to reduce tire wear and extend tire life, automatically resets, no need to calibrate or reset. 2High Accuracy: Digital display reading instantly and clearly. You can change between Psi Bar Kpa and even Kg/cm^2 by pressing the left button before taking a pressure reading. 3Setting Range: 4 settings with range 0?150PSI, 0?7Bar, 0?7Kgf/cm2 or 0?700KPA and accurate readings in 0.05 increments. Works on all car, motorcycles and bicycles. 4Operation: Ensure that the vehicle is in the Tpms Learn Mode, hold right antenna against the sidewall of the tire, near the valve stem. Depress right button while holding the tool against the tire sidewall. 5Power Saving: Auto shut off in 30sec for battery preservation, extend the life of the battery, powered by a 9V battery, but the battery is not included in the package.