RioRand Wireless Tire Pressure Monitoring System LED Display Cigarette Lighter 4 Sensors Bar Psi Tpms External Sensor Car Accessories DIY Tire Gauge Brand: RioRand Monitors up to 4 wheels; Quickly reacts to abnormal pressure or temperature Waterproof & Dustproof sensors; Customizable Tire Pressure Monitoring Criteria Sensor Alarm system included; Guard Against Theft.Visual & audible warning indicator Wirelessly measures Tire pressure & Temperature in Real Time