This is a very cheap item from China. As you review the literature, look for typos. Ad is misspelled in several places and in many different ways. Indicator, indicator, etc. The light worked, but the pump did not light up. Gab, and the compressor switch is dead. PSI mode was ok, tire pressure adjustment was ok, but after adjustment after flashing and power button, the compressor did NOT turn on. Very disappointing. Waste of 1 hour of my time trying to get it working. Cheap plastic. In addition, the pump hose must be screwed to the tire valve. The assembly is not very convenient and the hose from the block to the tire is very short. I am returning a refund and will not replace this product.