Initially I had some technical issues with the device but after calling their support team I realized it was user error! This is a great product for easy tire inflation. It is best to air them out after a long journey, because all you have to do is connect the hoses and switch on the on-board air compressor. And while you wait to get some air, you can just sit in your air-conditioned jeep and watch the tire pressure gauge vibrate in your jeep! I literally love it.