Feature

●Use IO trigger for high level signal (10us or above)
●The module automatically transmits 8 40 kHz to detect whether the pulse signal is returned
●Operating Voltage: DC 3.3V-5V; Static Current: <2mA
●Test Distance=(High Level Duration)*(Sonic:340m/s)/ 2
●Package Includes: HC-SR04 Distance Sensor Female to Male Jumper Wire


Description

Excellent sensor for Arduino projects Enjoy electronics and programming!



Module Operating Principle:






Triple pin pulls to high levels for impulse over 10 US; modular starting range
The module automatically transmits 8 40KHz square-wave waves to detect whether a signal is returned.
When the range is complete and if you find an object before, the echo pin will reach a high level and the time of the high level based on different distances.
Therefore, the distance can be easily calculated. Distance=(High level duration time)*(Sonic:340m/s)/ 2



Wiring Instructions:
VCC ---- DC 3.3V-5V
GND ---- Ground Wire
Trig ---- End Control
Echo ---- Receiving end



Specifications:
Model: HC-SR04
Operating voltage: DC 3.3V-5V
Level Output: High 5 V, Low 0 V
Induction angle: <15°
Detection Range: 2-450cm
Accuracy: Up to 0.1 inch (0.3 cm)
PCB size: 1.8 x 0.8 inches (45 x 21 mm) (L x W)
Jumper Wire Length:22cm
Fixed hole diameter: 0.08 inches (2 mm)