USB Tire Pressure Monitor for Android Navigation Tire Pressure Monitoring Alarm System/Wireless Digital Transmission Tire Pressure Tool with Sensor The Tire Pressure Monitor can simultaneously monitor and display all the 4 tires' pressure or temperature. It is widely suitable for vehicle with four tires and the maximum pressure of the tire is below 8 bar, such as a commercial car, for off-road vehicle, minibus, and sedan car, etc. Features: Simultaneously monitor and display all the 4 tires' pressure or temperature. This system is widely suitable for vehicle with four tires and the maximum pressure of the tire is below 8 bar, such as a commercial car, for off-road vehicle, minibus, and sedan car, etc. The real-time data of tires will be sent to the DVD through USB port to remind the driver for the comfortableness of vehicle and driving safety. Provides four sensors, which are suitable for using in any type of weather. Besides, they are in high sensitivity and fine accuracy for measuring pressure and temperature. Alarm when pressure and temperature is not up to standard like flat tire, improve fuel efficiency, prolong tire lifespan, ensure driving safety. Specifications: Types for your to choose: With External sensor, With Internal Sensor (optional) External sensor: Battery: built-in CR2050 button cell Working Temperature: -40°C~ +125°C Pressure measurement range: 0~8 bar Temperature sensitivity: ±3℃ Standby current: <0.7uA Emission current: <10mA Size: 76 * 53mm Internal Sensor: Battery: built-in CR2025 button cell Working Temperature: -20°C~ +60°C Pressure measurement range: 0~8 bar Temperature sensitivity: ±4℃ Standby current: <0.7uA Emission current: <8mA Size: 20 * 16mm For Tire Pressure Monitor Receiver: Working voltage: 5V Working current: less than 16mA Working frequency: 433.92MHz Working temperature: -40°C~ +85°C Port: USB Receiving sensitivity: < -105dbm Package size:    With External Sensor: 160 * 140 * 60mm / 6.3 * 5.5 * 2.4in    With Internal Sensor: 158 * 140 * 58mm / 6.2 * 5.5 * 2.3in Package weight:    With External Sensor: 180g / 6.3ounce    With Internal Sensor: 250g / 8.8ounce Package List: 1 * Tire Pressure Monitor 4 * Sensors 1 * Set of Mounting Accessories 1 * Manual