Features: Colorful LCD digital displaying, clear to show tire information Wireless connect by external sensors, easy install Real-time automatic monitoring and warning of information, such as low tire pressure, high tire pressure, rapid air leak, high tire temperature and low battery voltage Accurately receive the signal, and reflect the tire pressure condition truthfully and intuitively Note: The host must be turned on before installing the sensor. Press and hold the left button for 3 seconds Function: Rear-time monitoring pressure & temperature of 4 tires Low air pressure / High tire pressure alarm High temperature / Leakage / Low Battery Alarm Specifications: Material: ABS + Metal Battery Powered: 2 x AAA Battery (Not Included) External sensor working temperature: -20-60 Size: As the picture Package included: 1 setCar Tyre Pressure Monitoring System