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 (�[)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)