Ultrasonic Distance Sensor

Datasheet:
Ultrasonic Ranging Module HC-SR04

Features:
2cm to 400cm Measurement Range
3mm Ranging Accuracy
40Hz Working Frequency

Connection:
VCC to 5V Supply
TRIG to Arduino Digital Pin
ECHO to Arduino Digital Pin
GND to 0V Ground

Dimensions:
45mm x 20mm x 15mm

Use-Case:
Detects close-range obstacles for the front-facing portion of RoboFlock. Acts as a failsafe for objects not detected by the LiDAR module.