Zimri TPMS installs in seconds!  Simply replace your existing tire-valves with the supplied sensor caps, plug in the LED digital display readout in your vehicle and you're ready to go!  Each tire sensor will send REAL-TIME information to let the driver know the condition of each tire.  The digital display will cycle through all 4 tires every 2 seconds with important information to keep you on the road, eliminating down time.