Ultrasonic Module HY-SR04 Distance Sensor (Sonar)

Ultrasonic sensor for use in Arduino projects to measure distance, can be used with Multiwii boards / megapirate / Arducopter.
Really easy to add to the Naze32 in baseflight and cleanflight - great for Carpark racing : )

Works better indoors or on flat surfaces - grass can reflect with angles greater than 15 degrees

Working Voltage : 5V(DC)
Static current: Less than 2mA.
Output signal: Electric frequency signal, high level 5V, low level 0V.
Sensor angle: Not more than 15 degrees.
Detection distance: 2cm-450cm.
High precision: Up to 0.3cm
Input trigger signal: 10us TTL impulse
Echo signal : output TTL PWL signal
Mode of connection:
VCC
trig(T)
echo(R)
GND

Package include:
1pcs Arduino Ultrasonic Module HY-SR04 Distance Sensor