RexQualis Inc. is a professional manufacturer of electronic components products, involved in development, design, production and saleing of Arduino, Raspberry Pi, and other products. Our aim is to provide clients with the highest cost performance products, to provide the best service, make science fun ,make science popular. Although our products are few reviews till now, we actually sold few hundreds of a month.We sincerely hope that you can provide valuable opinions for our products and services, this is the power of prompted us to do better. -------------------------------------------------------- Module has 4 pins: VCC , Trig, Echo, GND. So it's a very easy interface for controller to use it ranging; The all process is pull the Trig pin to high level for more than 10us impulse, the module start ranging; Finish ranging, If you find an object in front, Echo pin will be high level, and based on the different distance, it will take the different duration of high level; So we can calculated the distance easily: Distance = ((Duration of high level)*(Sonic :340m/s))/2. Power Supply :5V DC Quiescent Current : Effectual Angle: Ranging Distance : 2cm - 500 cm Resolution : 0.3 cm Package including: 5PCS HC-SR04 Ultrasonic Module Distance Sensor 1PCS 10-pin Male to Female Dupont WireWARNING: CHOKING HAZARD-- Small parts. Not for children under 3 yrs.
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