The TPMS dynamically monitors tire pressure, which can prevent puncture and damage of car parts caused by flat tire. Improve fuel efficiency, prolong tire life, increase traffic safety and avoid abnormal wear of vehicle parts. 

Anti-theft Deterrent - Product also features the anti-theft deterrent lock that requires a proprietary wrench to unscrew (You will also be notified by the App if any tire sensor is missing).

Install Cliff-Top® TPMS is less than 5 minutes without the need for professional help. Just screw on the sensor and follow the App's on-screen instructions or Youtube instruction video (App can be downloaded on Apple store and Google play).

It has 2 external sensors which are easy to be mounted and replaced (search if you need a replacement sensor). Also the batteries can be easily replaced (one CR1632 battery for each sensor). Compared to internal sensors, they cost less money and effort. You can DIY and never need to pay extra money for professional replacement. No risk to destroy your tire, just plug.