HC-SR04 Ultrasonic Sensor Module in Pakistan

HC SR04 HC-SR04 Ultrasonic Sensor Module

1. Working Voltage : 5V(DC)2. Static current: Less than 2mA.3. Output signal: Electric frequency signal, high level 5V, low level 0V.4. Sensor angle: Not more than 15 degrees.5. Detection distance: 2cm-450cm.6. High precision: Up to 0.3cm7. Input trigger signal: 10us TTL impulse8. Echo signal : output TTL PWL signal

Mode of connection:

1.VCC2.Trigger(T)3.Echo(R)4.GND

Module Working Principle:

1. Adopt IO trigger through supplying at least 10us sequence of high level signal.2. The module automatically send eight 40khz square wave and automatically detect whether receive the returning pulse signal.3. If there is signals returning, through outputting high level and the time of high level continuing is the time of that from the ultrasonic transmitting to receiving.Test distance = (high level time * sound velocity (340M/S) / 2.