Feature:Specification:Car tire pressure monitoring system for Android car DVD/navigation systems, real-time monitoring and display of tire pressure and tire temperature, if there is any abnormality, it will alarm in time to ensure driving safety.Features:USB tire pressure monitor, real-time monitoring of 4 tire pressure and tire temperature, to ensure driving safety.It is compatible with most Android car DVD/navigation systems in the market, wireless transmission, easy to view.Equipped with 4 high-accuracy sensors, it is sturdy, waterproof, high temperature resistant, easy to install and use.When the tire pressure or temperature is abnormal, the system will sound an audible alarm through the car speaker.Supports automatic hibernation when parking, automatic wakeup at startup, energy saving, and long battery endurance.Wide range of applications, it is suitable for sedan car, off-road vehicle, commercial vehicle, SUV, etc.Specifications:Color: BlackMaterial: ABSSensor Type: External Sensor / Internal Sensor(optional)Receiver--Working Voltage: 12 VWorking Current: ≤15mAWorking Frequency: 433.92MHzWorking Temperature: -20-80Storage Temperature: -30-85Interface: USBItem Size: 62 * 42 * 15mm/ 2.4 * 1.7 * 0.6inExternal Sensor--Battery: 1 * CR1632(180mAh)Standby Current: <0.7ATemperature Measurement Accuracy: ±4, -20-50Working Temperature Range: -20-60Pressure Measurement Range:0-8BarEmission Current:<8mAItem Size: 20 * 20 * 16mm/ 0.8 * 0.8 * 0.6inInternal Sensor--Battery: 1 * CR2050(350mAh)Standby Current: <0.7ATemperature Measurement Accuracy: ±3, 0-70Working Temperature Range: -40-125Pressure Measurement Range:0-8BarEmission Current:<10mAItem Size: 76 * 53mm/ 3.0 * 2.1inPackage Size: 220 * 170 * 50mm/ 8.7 * 6.7 * 2.0inPackage Weight: External Sensor: 200g/ 7.1oz Internal Sensor: 280g/ 9.9ozPacking List:1 * Tire Pressure Monitor4 * Sensor1 * Wrench4 * Nut1 * User's ManualPackage List:1 * Tire Pressure Monitor4 * Sensor1 * Wrench4 * Nut1 * User's Manual