3 in 1 multifunction: quickly measured / inflated / inflated. Compatible with the output of 1/4 inch NPT air compressors.Note: This tire pressure gauge cannot be connected to a portable air compressor (Avid ACAP322 , MW110D, ACAP330, AHCAP040). Advanced precision: The digital pressure gauge always returns a stable reading less than 1% of your exact tire pressure with an incredible display resolution of 0.5. No more guessing Measuring range 0 ~ 200 PSI (0 ~ 13.8 Bar, 0 ~ 14Kg / cm, 0 ~ 1378Kpa). HD digital display: High definition digital display has two modes, backlight on and off, so you can get a clear reading in any environment. It will automatically turn off after 20 seconds of inactivity to save battery. Suitable for all vehicles: manage the pressure of cars, trucks, motorcycles, SUVs, all-terrain vehicles, motorhomes, trailers , etc. This tire pressure gauge uses AAA batteries. Package includes: 1 * digital tire pressure gauge, 4 * valve caps, 1 * valve core tool, 1 * thread sealing tape, 1 * user manual. Batteries are not included.