Features: 100% Brand new and high quality. Item Type: Digital Tire Preure Gauge Application: Car, Van, Bus, Truck, Motorcycle, Bicycle, etc. Display: LCD Backlight: Yes Unit: Psi, Bar, Kpa, Kg/cm2 Function: Inflation, Deflation, Preure Gauge, Preure Monitoring Power Supply: 2x AAA Batteries (included) Working Temperature: -20C~65C Preure Range: 0-255Psi/0-18Bar/0-18Kg/cm2/0-1800KPA Precision: 0.3Psi/0.02Bar (Temperature in 20-30) Resolution Ratio: 0.1Psi/0.01Bar/0.01Kg/cm2/1Kpa Meterial: nylon,rubber,metal Hose Length: about 600mm (without inflator) Size: as pictures show Weight: about 510g Operation: Air inlet (G) of tire preure gauge is connected to air source such as air compreor. (Only preure measured if without air source), Twist the nozzle cap of the tire valve. Insert the inflatable clip nozzle (H) vertically into the tire valve nozzle and ensure that there is no air leakage. Pre the left button (C) to start the machine, and pre the right button (D) to switch the unit to BAR after the machine is started. After the adjustment, it will be automatically saved for the next use. (When the tire is connected, it will automatically turn on when the preure is detected, showing the actual tire preure.) When the tire preure is too low, pre the handle (F) to inflate, and when it is too high, pre the exhaust valve (E) to deflate. When the screen shows the air preure valueinflatedneeded done, remove inflatable clip nozzle (H). After 30 seconds, do not use automatic shutdown or long pre the left button to shut down. Problems and Solutions: If there is too much water in the air compreor or the temperature difference in the use environment is large, the tire preure gauge may appear negative preure and not shut down. Remove the battery and reinstall it to restore the default setting. The backlight is dark and the display is not clear. Please note whether the icon of battery power is at low voltage, and replace the battery in time (No.7 battery is used in the product). Inflation is slow and air is not filled. Check whether the preure of the air compreor is too low or the clamp is not completely open the valve core. Note: The product can not be directly inflated, which needs to be connected to air compreor and other air source equipment. The product is powered by 2x 7 AAA batteries. To install or replace the battery, open the soft adhesive sheath to see the battery compartment. If the two keys cannot be preed at the same time, the calibration mode will be entered. Remove the battery and reinstall it. The backlight will automatically turn off within 15 seconds. To turn it on again, pre the on button. Convert by unit and select the desired unit. After the selected unit is shut down, it will be saved as the default unit. Package Included: 1 x Tyre Preure Gauge 1 x Rubber Hose 1 x Manual