... and safe environment. In the course of driving, the vehicle tire pressure monitoring system for automatic vehicle tire pressure monitoring, ... tires, change the tire air chamber missing hours, the vehicle tire pressure monitoring system will automatically alarm. It will ... 16VWorking currentNormal condition:1≤50mAAlarm, braking condition:1≤60mA.Vehicle key OFF state:=0mA.Signal input, ac impedance≥20K ...