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• 14:42, 4 September 2021 MaurineSturgill talk contribs created page PDF Novel Design Of Computerized Sanitizer Dispenser Machine Primarily Based On Ultrasonic Sensor (Created page with "<br>It works on ultrasonic waves reflection precept.<br>Ultrasonic ranging module HC - SR04 gives 2cm - 400cm non-contact measurement<br>function, the ranging accuracy can rea...")