Real-time monitor:TPMS can provide the pressure and temperature statuses of 4 tires in real time. When the data are abnormal, the driver will get alarm and flashing warning . Power supply:It features the solar panel with high conversion rate and USB charging port, supporting solar charging and USB cable charging, no need to worry about the power shortage. Vibration Power On:It will sense the vibration and turn on when you open the car door. Smart sleep mode(Auto Power OFF):After successful installation, it will sense the vibration and turn on automatically when you open the car door. And it will turn off automatically after parking for 3 minutes, rather energy-saving. Different placements:You can directly place it on the car dashboard or on your car windshield for there are 2 strong adhesive tapes on its backside. Sticking it on the front windshield is more in line with the visual habit. You can know the situations of tires without turning your head. Name:Wireless Solar External Tire Pressure Monitor Display mode:LCD color screen Charging form:USB + solar charging Charging voltage:5V Sensor:External sensor Signal transmission and reception :ASK Pressure measurement range:0-5.0Bar Temperature measurement range:-30 Celsius 85 Celsius Battery type:lithium battery Waterproof rating:IP67 Applicable models:General Product function:tire pressure monitoring Display function:display the pressure value and temperature value of four tires; electricity; solar energy; pressure unit; temperature unit Parameters that can be changed by setting:temperature unit (Celsius/Fahrenheit), tire pressure unit (PSI/BAR), high/low temperature alarm value, high pressure/low pressure alarm value Factory setting:high pressure 3.2Bar; low pressure 1.8bar; temperature 70 degrees Celsius External Sensor Installation Steps: 1. Unscrew the tire nozzle cap and install the tire pressure relief ring. 2. Install the external tire pressure sensor on the tire nozzle in sequence. 3. Screw up the sensor and tighten ring with the wrench colour:black Material:ABS+PC size:Solar charging board size:67*43mm Package Contents: 1 x TPMS Mainframe 4 x External Sensor 4 x Mounting Nut 1 x Wrench 1 x Anti Slip Mat 1 x USB cable 2 x Adhesive Tape 1 x English User 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.