If you are sourcing an ultrasonic ranging module, the HC-SR04 is a good choice. Its stable performance and high ranging accuracy make it a popular module in electronic market. Compared to the Shap IR ranging module, HC-SR04 is more inexpensive than it . But it has the same ranging accuracy and longer ranging distance.
- Quiescent current: <2mA
- Effectual angle: <15°
- Ranging distance: 2cm – 500 cm
- Resolution: 1 cm
- Ultrasonic Frequency: 40k Hz