Package Included

- 1 x HC-SR04 HC SR04 Ultrasonic Module

Description:

1. Working Voltage: 5V(DC) 
2. Static current: Less than 2mA.
3. Output signal: Electric frequency signal, high-level 5V, low-level 0V.
4. Sensor angle: Not more than 15 degrees.
5. Detection distance: 2cm-80cm.
6. High precision: Up to 0.3cm
7. Input trigger signal: 10us TTL impulse
8. Echo signal: output TTL PWL signal

Mode of connection:
1. VCC
2. Trig(T)
3. Echo(R)
4. GND

Reference

• https://lastminuteengineers.com/arduino-sr04-ultrasonic-sensor-tutorial/

Video Reference