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1pcs 2020 Ultrasonic Module HC-SR04 SR04 4Pin HY-SRF05 SRF05 5Pin Distance Measuring Transducer Sensor - AliExpress
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TRI-TRONICS CLSC-1M8LE Clear Label, 4-PIN Connector, Advanced Timer, ULTRASONIC Sensor, Polarity Protected, NPN and PNP Output, M8, 12-30 VDC: Amazon.com: Industrial & Scientific
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AEDIKO 10pcs HC-SR04 Ultrasonic Module Distance Sensor with Wire Cable : Industrial & Scientific - Amazon.com
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