Ultrasonic HC-SR04 Distance Measuring Module

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

• VCC
• trig(T)
• echo(R)
• GND

• Adopt IO trigger through supplying at least 10us sequence of high level signal.
• The module automatically send eight 40khz square wave and automatically detect whether receive.the returning pulse signal.
• 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.

Package Includes:

• 1 x HC-SR04 Ultrasonic Module