The tire monitor can I recommend it to anyone whose car has not already built a tire pressure checking system. , Very easy to install an absolute safety plus and works stable. I had the device in a Mercedes E-class and have it now in a Toyota Land Cruiser, so far without any problems. When Land Cruiser has once beaten in time alert when a tire suddenly had a break on the carcass and air lost - thankfully just before I drove on the highway. But if I was able to easily drive to the workshop and for replacement tires. Without the device else could happen ... so that the purchase has definitely paid off.