Solar TPMS Tire Pressure Monitoring System 4 Sensors Real‑Time Car Tire Pressure & Temperature Alarm for Vehicle Safety

Attention:If the sensor value is 0 after installation, please pair the sensor with the machine according to the instructions.Please charge first to activate the batteryAfter you receive the goods, please charge it about 3-4 hours to activate the battery.  Because in the process of transportation, the TPMS will automatically start to work and run out power.   Therefore, you can not turn on it immediately when you receive TPMS, which is normal.How to replace the External Sensor battery?1. Remove the dismantling gasket；2. Wrench the shell with a wrench；3. Remove the battery；4. Replace a new battery.Please turn on monitor before install sensor1. Press and hold on the power button to turn on monitor2. Install External or Built-in sensors one by oneMain Features