2pcs Ultrasonic Module HC-SR04 Distance Sensor with 2pcs Mounting Bracket for Arduino Uno R3 Mega 2560 Nano Raspberry Pi 3 Smart Robotics Projects

Brand: XiaoR Geek

Color: Ultrasonic sensor

Features:

• HC-SR04 Ultrasonic Sensor Distance Module:using IO trigger for at least 10us high level signal.
• The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
• If the signal back,through high level,time of high output IO duration is the time from sending ultrasonic to returning.Test distance = (high level time velocity of sound (340M/S)/2.
• Power Supply:5V DC;Quiescent Current: