HC - SR04 Ultrasonic Distance Measuring Sensor Module for Arduino

HC - SR04 Ultrasonic Distance Measuring Sensor Module for Arduino / NewPing Library<br>coupon:3RDSR04 <br>$0.99 <br>piece:100<br>● Static Current: Less than 2mA<br>● Output Signal: Electric frequency signal, high level 5V, low level 0V<br>● Sensor Angle: Not more than 15 degrees<br>● Detection Distance: 2cm-450cm<br>● High Precision: Up to 0.3cm<br>● Input Trigger Signal: 10us TTL impulse<br>● Echo Signal: Output TTL PWL signal

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