1. : The tyre pressure sensor is made of ABS+Copper material, impact resistance, heat resistance, low temperature resistance, chemical resistance, excellent electrical performance. 2. Bluetooth-compatible APP Tire Pressure Monitor: Connect mobile phone Bluetooth-compatible, monitor tire pressure, APP set high, low pressure and high temperature alarm values. 3. Data Display: The tire pressure monitoring system can display real-time tire pressure data, the tire pressure change is immediately known, and the tire pressure of four tires is checked at the same time. 4. Alarm System: The tire pressure monitor has a reliable alert system, it alert you when something abnormal happens. The mobile phone alert you when the tire pressure is too high or too low, and alert you when there is an air leak. Name:Car Bluetooth-compatible 5.0 Tire Pressure Monitoring System Master:SY36201 Communication name:BLE4.1 Bluetooth-compatible version:5.0 Working voltage:2.1-3.3V Display method:APP Waterproof grade:IP67 Tire pressure monitoring range:0-100PSI (error less than 3psi) Bluetooth-compatible operating frequency:2.4GHz Bluetooth-compatible mit power:4dBm MAX Response time:less than equal 4s Single sensor power supply:140mAh (1 coin cell battery 1632 product includes battery) Battery life:2-3 years Applicable:4 wheel cars Colour:As Shown Material:Plastic+Metal Package Contents: 4 x Sensor 1 x Wrench 4 x Anti-theft screw 1 x English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.