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HC-SR04 Datasheet PDF - ELECFreaks

Part Number HC-SR04
Description Ultrasonic Ranging Module
Manufacturers ELECFreaks 
Logo ELECFreaks Logo 

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HC-SR04 datasheet, circuit
Tech Support: services@elecfreaks.com
Ultrasonic Ranging Module HC - SR04
Product features:
Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact
measurement function, the ranging accuracy can reach to 3mm. The modules
includes ultrasonic transmitters, receiver and control circuit. The basic principle
of work:
(1) Using IO trigger for at least 10us high level signal,
(2) The Module automatically sends eight 40 kHz and detect whether there is a
pulse signal back.
(3) IF the signal back, through high level , time of high output IO duration is
the time from sending ultrasonic to returning.
Test distance = (high level time×velocity of sound (340M/S) / 2,
Wire connecting direct as following:
5V Supply
Trigger Pulse Input
Echo Pulse Output
0V Ground
Electric Parameter
Working Voltage
Working Current
Working Frequency
Max Range
Min Range
MeasuringAngle
Trigger Input Signal
Echo Output Signal
Dimension
DC 5 V
15mA
40Hz
4m
2cm
15 degree
10uS TTL pulse
Input TTL lever signal and the range in
proportion
45*20*15mm
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