Easy Installation, Quick Alarm: The Taimster Tire Pressure Monitoring System MS1 offers five alarm modes, including quick air leak alarm, high/low pressure alarm, high temperature alarm, and sensor battery low power alarm. The sensors are pre-programmed with the monitor after production, so you only need to set the desired safe pressure and temperature values. Alarm safety ranges are -25% PSI to +25% PSI for reference pressure and -25°F to +25°F for reference temperature. The alarm will activate when monitored data exceeds these safe ranges. Solar and USB Charging: This tire pressure monitoring system supports both solar and USB charging. Equipped with high-quality solar lithium battery panels, the monitor delivers efficient automatic charging and energy storage, extending its service life and ensuring reliable operation. USB charging is supported with a included USB cable, providing continuous power for around-the-clock functionality. If the display indicates low power despite sufficient sunlight, use the provided USB cable to charge the device. Multiple Alarm Modes and Automatic Settings: The TPMS features various alarm modes for enhanced safety, including high/low pressure and high temperature alerts. Upon sensor installation, the monitor automatically sets the current tire pressure as the reference point, eliminating the need for manual configuration of alarm thresholds. This smart function provides convenience and accuracy. Note: Due to manufacturing variations, the appearance of some accessories may differ slightly between batches. This does not affect performance or compatibility. Specifications: Working Voltage: 3.7V Operating Temperature: 70°C Waterproof Rating: IPX7 Pressure Range: 0–6 BAR Transmitting Frequency: 433.92 MHz Transmitting Power: 10 dBm Charging Voltage: DC 5.1V Color: Black Material: Plastic Package Contents: 1 x Display Screen 4 x Sensors 1 x Charging Cable 4 x Nuts 1 x Wrench Note: Light reflection and differences in display screens may cause slight color variations between the product image and the actual item. Measurement error allowance is +/- 1–3 cm.