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.
The module performance is stable,measure distance accurately.SRF05,SRF02 ultrasonic ranging module comparable.This module is compatible with GH-311 anti-theft module.
The Xiao R Geek HC-SR04 Ultrasonic Distance Measuring Sensor Module includes an ultrasonic transmitter, receiver and circuits. It has 4 pins: VCC, TRIG, ECHO, and GND. The anti-reverse pin header onside makes it easy to connect and apply.
HC-SR04 is great for all kinds of projects that need distance measurements, avoiding obstacles as examples.
HC-SR04 provides a 2cm-450cm non-contact measurement function, the ranging accuracy can reach 2mm.
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov.
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