The store will not work correctly when cookies are disabled.
Holiday Notice: Elecrow will be on holiday starting January 26th (GMT+8).
the last shipment day for service orders is January 21st.
Orders can still be placed during the holiday, but deliveries will be delayed. [Learn More]
This HC-SR04 has stable performance and high ranging accuracy. 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.