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 battery power alarm). The sensors are equipped with programming with the monitor after production, you only need to set the safe pressure value and safe temperature value you need. Alarm ranges are -25%PSI to +25%PSI for reference pressure and -25%F to +25%F for reference temperature. The alarm be triggered when the monitored data is out of the safe range. [Solar and USB Charging] The tire pressure monitoring system supports both solar charging and USB charging. By using higher quality and more solar lithium battery panels, the monitor has excellent automatic charging and storage capabilities, which can extend the service life of the monitor, ensuring that drivers do not need to worry about the continuity of the product's operation. Supports USB charging and is equipped with a USB charging cable, double insurance to normal use around the clock. If the display power flashes when there is sufficient sunlight, please use the provided USB cable to charge the display. [Various Alarm Modes and Automatic Alarm Value Settings] The TPMS tire pressure monitoring system alarm mode protects , including high/low pressure alarms, high temperature alarms, etc. When the tire sensor is installed, the monitor automatically configure the current pressure as a reference point, without the need to manually set the high and low pressure alarm values, which is smart and convenient. Due to different batches, the appearance of some accessories may be slightly different, which not affect the use Working voltage: 3.7V Working temperature: 70c Waterproof level: IPX7 Pressure ra: 0-6BAR Transmitting frequency: 433.92MHZ Transmitting power: 10dBm Charging voltage: DC 5.1V Colour:Black Material:Plastic Package Contents: 1x display screen 4x sensors 1x Charging cable 4x Nuts 1x Wrench 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.