Recently the tire pressure sensor light came on in my car. I checked the pressure with a dipstick and found it was low, then I attached a Cycplus tire inflator to the tire and it gave the same tire pressure as the stick gauge. I set the pump to the recommended pressure and pressed the start button and it quickly inflated the tire to the set pressure and then shut off. Very easy to use and I love that it's so compact. No more searching for an air pump gas station and throwing in coins! Worked great on my bike too.