This kit features a solar-powered display that automatically charges during the day and can also be charged via USB. The four external sensors are easily installed on the tire valves and come with anti-theft locking nuts. The system alerts the driver with an audible alarm and visual flashing in case of air leaks high pressure or high temperature. It helps in improving fuel efficiency and extending tire life by maintaining optimal pressure. The sensors are IP67 waterproof and have long-lasting replaceable batteries.