Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      XZ-21B-34TS Product Number XZ-21B-34TS Description Enquiry Send Enquiry Specification Resonant Frequency (KHz) 3.4 ± 0.5 Resonant Impedance (Ω)max 600 Static Capacitance(pF)±30% 25000 Shape K Dimensions(mm) (D±0.1, d±0.2, T±0.05, t±0.02) 21 , 14.3 , 0.22 , 0.1 Plate Material Brass   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)