... element,replaceable,renewable by same plate transducer Clangsonic Dual-Frequency Cleaner By Plate Transducera) Adopt identical transducer element but ... plate transducerc) Customized to solve different problems with different frequency ,power,shape,size etc Illustration on characteristicsThis is submersible ... Plate transducer and the wire side view Dual-frequency cleaner by plate transducer