Type: Alarm Systems & SecurityMaterial Type: ABSDial Diameter: 1.9 Inches & UnderDisplay Type: DigitaBacklight:NoneTest range: 2.0-99.5 PSI OR 0.15-7.00 BARAccuracy: +/-1.5PSIResolution: 0.5PSIUnits: PSI, BAR, KPA, Kg/cm2Power supply: one 3V CR2032 battery ( not included)Product size: Approx.143*45*23mm1. Power on the gauge, the last test result is displayed. Press the 'ON' button for unit conversion (PSI - BAR - KPA - Kg/cm2). The simultaneous test of unit transformation shows that the value is changed accordingly.2. The nozzles of the pressure gauge are aligned with the tire valve and tight pressure to ensure that the nozzle and valve are in good touch,and there is no hissing sound. After 3 seconds, remove the gauge from the valve and the accurate tire pressure is read, and the data is kept for 15 seconds. After the data is zero, move the pressure gauge to the other tires to continue to test.3.If gauge is not operated for 60 seconds, it will power off automatically. Or press ON key for 3 seconds to turn off the gauge.1. Test tire pressure value quickly.2. LCD display, easy to read.3. Automatically save current data for later reading.notes:1. Due to manual measurement, please allow a distance of 1-3 cm.2. Light shooting and different display may cause the color of the item in the picture to be slightly different from the real item. Please refer to the received product. Thank you for your understanding.