If you are sourcing a ultrasonic ranging module , the HC-SR04 is good choose . 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.

Documents

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Datasheet

• DS_IM120628012_HC_SR04.pdf2012-07-07 02:39:40526KB

Library

Lib_IM120628012_HC_SR04.zip