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HC-SR04 Ultrasonic Sensor Working, Pinout, Features & Datasheet
AVS COMPONENTS HC-SR04 Ultrasonic Sensor Module Range Finder Distance Measuring Transducerfor for All Type of Devlopment Board and Robot Pack of 2 Pcs : Amazon.in: Industrial & Scientific
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Ultrasonic Distance Sensor, Model Name/Number: HC-SR04 at Rs 90 in Coimbatore