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What is the maximum range of a ultrasonic sensor?

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HC-SR04 is an ultrasonic sensor mainly used to determine the distance of the target object. It measures accurate distance using a non-contact technology - A technology that involves no physical contact between sensor and object.Oct 5, 2018');})();(function(){window.jsl.dh('24','');})();(function(){window.jsl.dh('_MwaeYJ_bIYLM-gTly79w101','
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HC SR04 is inherently NOT a waterproof sensor. There are specific waterproof sensors for this purpose. JSN SR04T being one but it has only 1 transducer/sensor and therefore has a minimum blind distance of 20cm.

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