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Product features: Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact ; of work: (1) Using IO trigger for at least 10us high level signal,. HC-SR04 is an ultrasonic ranging module that provides 2 cm to 400 cm non-contact measurement function. The ranging accuracy can reach to 3mm and effectual. The HCSR04 ultrasonic sensor uses sonar to determine distance to an object like bats or dolphins do. It offers excellent noncontact range detection with HC SR04 datasheet · Operating voltage of +5V · Operating frequency of 40Hz · Conducting current of less than 15mA · It covers a measuring angle of 15 · The distanceHC-SR04 Ultrasonic Sensor User Guide Components datasheet pdf data sheet FREE from Datasheet4U.com Datasheet (data sheet) search for integrated circuits HC-SR04 ultrasonic sensor provides a very low-cost and easy method of distance measurement. It measures distance using sonar, an ultrasonic (well above human The transmitter emits a 8 bursts of an directional 40KHz ultrasonic wave when triggered and starts a timer. Ultrasonic pulses travel outward until they Feature, HCSR04 Ultrasonic Sensor Elijah J . Morgan Nov. 16 2014 The purpose of this file is to expla in how the HCSR04 works. Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules.