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HC SR04 Distance Measurement Transducer Sensor for Arduino : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Industrial & Scientific
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HALJIA US-100 Ultrasonic Sensor Module Distance Measuring Transducer Board Compatible with Arduino Uno DIY : Amazon.co.uk: Business, Industry & Science
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The distance sensor is used to measure the distance using ultrasound compatible with the Arduino: Buy Online at Best Price in Egypt - Souq is now Amazon.eg