HC-SR04 Ultrasonic Sensor Ultrasonic Measuring Distance Sensor Transmitter And Receiver Module
HC-SR04 Test Distance : high level time velocity of sound (340M/S) /2.
HC-SR04 Ultrasonic Sensor Distance Module: using IO trigger for at least 10us high level signal.
HC-SR04 Power Supply : 5V DC; Quiescent Current : <2mA,; Effectual Angle: <15° ; Detection Distance : 2cm~500 cm; Resolution : 0.3 cm
HC-SR04 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.
Power supply: 5V DC; Quiescent current: less than 2mA.