Product feature:
HC-SR04 ultrasonic module can offer non-contact distance sensing function, the range of which is 2cm—400cm., and the range accuracy is up to 2mm; the module includes ultrasonic transmitter, receiver and control circuit.
Electric parameter:
HC-SR04 ultrasonic module
Operating voltage
DC 5V
Operating current
15 mA
Operating frequency
40 Hz
Utmost range
4 m
Nearest range
2cm
Measure angel
15°
Input trigger signal
10uS TTL pluse
Output echo signal
Output TTL level signal, proportional to the range
45*20*15 mm