Product description *1.owerful TPMS:Monitors tire preure and temperature condition in real time, which will transmit real-time data to the audio player of your car to remind the driver for the comfortablene of vehicle and driving safety.*Wide application:This system is widely suitable for vehicle with four tires and the maximum preure of the tire is below 8 bar, such as a commercial car, for jeep, off-road vehicle, minibus, and sedan car, etc.*Digital display:Includes a TPMS receiver, four external sensors, and a U disk. The real-time data of tires will be sent to the DVD through USB port, so you can know the status of your car easily and comfortably from the car audio player.*4 external sensors:Provides four sensors, which are suitable for using in any type of weather. Besides, they are in high sensitivity and good accuracy for measuring preure and temperature.Specifications:External sensor:1.Battery: built-in CR2025 button cell2. Working voltage: 2.1 - 3.5V3.Working temperature: minus 30 - plus 60 Deg.C4.Temperature measurement range: minus 30 - plus 85 Deg.C5. Preure measurement range: 0 - 116 psi6.Transmiion frequency: 433.92MHzTPMS receiver:1. Working voltage: DC 5V2. Working current: le than 15mA- Working frequency: 433.92MHz- Working temperature: minus 40 - plus 85 Deg.C- USB cable length of the receiver: about 220mm- Please note that our USB TPMS receiver isonly suitable for Android audio player