Intelligent Induction: When the car is started, the monitor senses vibration and automatically turns on, and sleeps after 5 minutes of rest, without manual switch. Second Level Alarm: The sensor sends data every 2 seconds/time, the host updates the data for 2 seconds/time, and the tire condition is detected at all times, prompting ''accident''. Working Temperature: High and low temperature protection of the battery. Strictly pass the high/low temperature work test. Charging Mode: 1+1 charging mode. Solar charging, 24-hour battery life, and USB charging interface to support charging in rainy days. Material: ABS Size: 9.5 x 8.3x 2.2cm Operating voltage: 3.7-5V. Storage temperature-30C-90C. working temperature-30C-85C. RF Emission frequency433.92MH50KHz. Working current6mA. Working voltage3.7-5V. Showing: LCD Color Screen Package list: 1 x Main Unit 4 x External Sensor 1 x User's Manual 1 x Wrench 4 x Nuts 1 x Android Data Cable 1 x Double Adhesive Tape