Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      XZ-27B-30S Product Number XZ-27B-30S Description Enquiry Send Enquiry Specification Resonant Frequency (KHz) 3.0 ± 0.5 Resonant Impedance (Ω)max 300 Static Capacitance(pF)±30% 35000 Shape E Dimensions(mm) (D±0.1, d±0.2, T±0.05, t±0.02) 27 , 20 , 0.38 , 0.15 Plate Material Brass   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)