Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      XZ-27B-42S Product Number XZ-27B-42S Description Enquiry Send Enquiry Specification Resonant Frequency (KHz) 4.2 ± 0.5 Resonant Impedance (Ω)max 200 Static Capacitance(pF)±30% 25000 Shape EH Dimensions(mm) (D±0.1, d±0.2, T±0.05, t±0.02) 27 , 20 , 0.5 , 0.25 Plate Material Brass   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)