We are Ningbo yifeng electronics factory based in , China. We are member of Tradekey.com since April, 2011. Our business is related to Electrical & Electronics Supplies industry and we specifically deal in piezo buzzer,piezo transducer,piezo siren,alarm,piezo electric diaphragm. Please find our product details below:FT-35-3.1 Piezo Ceramic ElementPART NO Fr(KHz) Zr(MAX) Cp(±30 Dimension(mm) D d T t FT-35-3.1A1 3.1±0.2 200 30 35 25 0.60 0.30Piezo TransducerModel No EFB2375P Rated Voltage 3Vrms Sine Wave Max.Allowable Voltage 30Vp-p Square Wave ***** Current 2mA at 2.0KHz/3Vrms Sine Wave Min.Sound Pressure Level 75dB at 2.0KHz/3Vrms Sine Wave/10cm Resonant Frequency 2.0±0.5KHz Operating Temperature -20~+80°c Weight 3gThank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.