Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      XZ-21B-35TE Product Number XZ-21B-35TE Description Enquiry Send Enquiry Specification Resonant Frequency (KHz) 3.5 ± 0.3 Resonant Impedance (Ω)max 250 Static Capacitance(pF)±30% 60000 Shape A Dimensions(mm) (D±0.1, d±0.2, T±0.05, t ±0.02) 21 , 20 , 0.22 , 0.1 Plate Material Brass   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)