Ultrasonic sensor HC-SR04

Description

  Module main technical parameters:
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-450cm.
6. High precision: Up to 0.3cm
7. Input trigger signal: 10us TTL pulse
8.Echo signal: output TTL PWL signal

  Mode of connection:
1. VCC
2.trig(T)
3.echo(R)
4. GND