HC-SR04 ultrasonic module sensor display measure distance
Working Voltage:DC 5V
Static State Current:5mA
Electrical Level Output: 5V high
electrical Level Output: at the end of 0V
Using Method:Control port sends a high of more than 10us then wait for the high output at the receiving port.Once there being output can open the timer timing,when the port goes low timer value can be read,this is for the distance of time,can calculate the distance.Uninterrupted period measurement, mobile measurement value can be obtained.