Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      04 SERIES Product Number 04 SERIES Description Enquiry Send Enquiry Specification Resonant Frequency (KHz) 22 ± 1.0 Operating Temperature Range (℃) -30 ~ +70 Weight 4g Capacitance at 120Hz (pF) 60nF ± 30% Sound Ouput (dB) at 22KHz >95dB Sound Ouput (Vp-p) at 50cm 3.0V Allowable Input ( Vp-p) 30   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)