This HC-SR04 has stable performance and high ranging accuracy. Compared to the Shap IR ranging module , HC-SR04 is more cheaper than it . But it has the same ranging accuracy and longer ranging distance. So we choose it to become “a family number of our Crowtail”, wish more good experience.

Features

• Power supply: 5V DC
• Effectual angle: < 30 degrees
• Ranging distance: 2cm to 500 cm
• Resolution: 1 cm
• Ultrasonic Frequency: 40k Hz
• Dimensions(mm):45.6(L)x34.7(W)x22.0(H)

Parts list

• Crowtail- Ultrasonic Ranging Sensor x 1

Links

• Wiki link