Description
Operating Voltage | DC 5V |
Operating Current | 15mA |
Operating Frequency | 40KHz |
Max Range | 4m |
Min Range | 2cm |
Ranging Accuracy | 3mm |
Measuring Angle | 15 degree |
Trigger Input Signal | 10µS TTL pulse |
Dimension | 45 x 20 x 15mm |
HC-SR04 Ultrasonic Sensor Pinout
Let’s take a look at its Pinout.

VCC is the power supply for HC-SR04 Ultrasonic distance sensor which we connect the 5V pin on the Arduino.
Trig (Trigger) pin is used to trigger the ultrasonic sound pulses.
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