This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ultrasonic detection chip or module recommended

Recently ultrasonic fault detection equipment, ultrasonic signal to interception equipment abnormal state (about 25kHz~35kHz), while lower than the frequency of signal and is not sensitive to TI if there is a chip or module recommended