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- Ultrasonic HC-SR04 Distance Measuring Transducer Sensor Module: using IO trigger for at least 10us high level signal.
- HC-SR04 consists of ultrasonic transmitter, receiver, and control circuit. When trigged it will sends out a series of 40KHz ultrasonic pulses automatically and receives echo from an object. The distance between the unit and the object is calculated by measuring the traveling time of sound and output it as the width of a TTL pulse.
- The HC-SR04 arduino ultrasonic sensor can send eight 40 KHZ and detect whether there is any pulse signal back. If it back, a high level signal will be outputed by IO, and the duration of the signal is the time from sending ultrasonic to returning.
- Ranging distance: 2cm~450cm. High precision: up to 0.3cm. Effectual angle:15 degree. Module precision: blind spots (2cm)-SUPER CLOSE.
- HC-SR04 Power supply: 5V DC; Quiescent current: <2mA; Size : 4.5 x 2.5 x 1.5 cm / 1.8x 1 x 0.59inch (L*W*T).
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