Inquiry (采购产品): Piezoelectric transducer Hello there, I'm looking forward a peizolectric transducer, the out put frequency and amplitude(SPL) are important for me. The frequency and amplitude should depend on input voltage. I need out put frequency around 25khz. Would please give me more information baout this. My mailign address is:1620 Pine view DR. NW Issaquah, Wa 98027 thank you, Vahid V.Vassey **** Hidden Message ***** Vahid Vassey 98027 Company: DIF E-mail: vahid_vv@yahoo.com **** Hidden Message ***** vahid_vv@yahoo.com