5Pcs -Sr04 Ultrasonic Sensor, Distance Sensor With Ultrasonic Transmitter And Receiver Module For Ar-Duino 4863233695612
Jojomino
Testmode:UsingIOtriggerforhighlevelsignal.(Notlessthat10us),TheModulesendseight40kHzautomaticallyanddetectwhetherthereisapulsesignalback.
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