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US $1.31032
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国家代码Description: The HC-SR04 is an ultrasonic distance measuring sensor module. It uses an ultrasonic transducer to measure the distance between the sensor and an object. Features: - High accuracy and st
Parameter Description Operating Voltage 5V DC Operating Current 2mA (when idle), ~15mA (when measuring) Operating Frequency 40kHz Range 2cm to 400cm Resolution 0.3cm Accuracy ±3mm T
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