Ultrasonic Sensor HC -SR04


Working Voltage: 5V(DC)
Static current: Less than 2mA.
Output signal: Electric frequency signal,
high level 5V, low level 0V.
Sensor angle: Not more than 15 degrees.
Detection distance: 2cm – 450cm.
High precision: Up to 0.3cm



Ultrasonic sensor used to measure distance of the closest object in its way. It sends sound signal and measures the time is takes for the sound to hit an obstacle and bounce back. This time will be used to compute the distance of closest object.


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