Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      XZ-31B-29E Product Number XZ-31B-29E Description Enquiry Send Enquiry Specification Resonant Frequency (KHz) 2.9 ± 0.5 Resonant Impedance (Ω)max 300 Static Capacitance(pF)±30% 25000 Shape A Dimensions(mm) (D±0.1, d±0.2, T±0.05, t ±0.02) 31 , 20 , 0.5 , 0.25 Plate Material Brass   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)