Ultrasonic sensor HCSR04
$3.00
Available
SKU: PRD110
The HC-SR04 ultrasonic sensor is a popular distance-measuring module that uses sound waves, just like bats do. It sends out a high-frequency pulse and measures how long it takes to bounce back. People commonly use this sensor in obstacle-avoiding robots, parking assistants, smart trash cans, and DIY security systems.
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