5Pcs Hc-Sr04 Ultrasonic Sensor, Distance Sensor With Ultrasonic Transmitter And Receiver Module For Ar-Duino 4711834885652

5Pcs Hc-Sr04 Ultrasonic Sensor, Distance Sensor With Ultrasonic Transmitter And Receiver Module For Ar-Duino 4711834885652

Test mode :Using IO trigger for high level signal.( Not less that 10us),The Module sends eight 40 kHz automatically and detect whether there is a...

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