HC-SR04 Ultrasonic Distance

https://www.keyestudio.com/3pcs-hc-sr04-ultrasonic-module-ultrasonic-sensor-distance-measuring-module-for-arduino-uno-robot-car-p0452-p0452.html

Feature

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 impulse

8.Echo signal : output TTL PWL signal