Features: Brand new and high quality USB and Solar power charging; High and low pressure, leak alarm; LCD display screen, Simple user interface Real-time monitoring tire pressure and temperature; The tire position of any swap function(no need to remove the sensor in the tire) Sensor Specification: Please install in by Professional car center More stable and accurate Operating frequency: 433.92Mhz0.1MHZ Working Temperature: -40~ 125 Operating Voltage: 2.0-3.6V Working current: static1uA, working current 15mA External Sensor (Optional): Easy to install, convenient to replace Dust-Proof / Water-Proof / Anti-theft Operating frequency: 433.92Mhz0.1MHZ Operating Voltage: 5V Working current: static50uA, working current 15mA Working Temperature: -20~70 Monitioring range: temperature : -40~125 , pressure: 0bar~3.5bar Accuracy: temperature : 2, pressure: 0.1bar Description: Solve the sensor does not work: Match sensor(Vent) Long press menu key 3 seconds to U/S,then short press menu key several times to enterLID interface,it shows ID of four tires and car icon. Short press left/right select key to learn ID opertion.Select tire you plan to learn ID of sensor by pressmenu key,default setting is FL When tire is selected,display new ID in receiver after active sensor//"'"s ID(internal sensor active by charging/vent tier). Do the same operation to match the other three sensors.When all sensor are matched,short press menu key to save and go to Ex. Package Included: 1 x Solar Charging Tyre Pressure Monitoring System 4 x External sensors 1 x USB cable 1 set x Accessories (tool) NOTES: 1. Due to different display and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. 2. Due to manual measurement, please allow a little measurement deviation. 3. If you have any problem with the product received or your package is missing, please in time, we will reply within 24 hours. Do drop