Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      LPB2420 Product Number LPB2420 Description Ø24x2.0(H)mm; Enquiry Send Enquiry Specification Rated Current (mA) ≦10 Resonant Frequency (Hz) 4000 ± 500 Operating Temperature Range (℃) -20 ~ +70 Storage Temperature Range (℃) -30 ~ +80 Weight 5g Rated Voltage ( V )D.C. 12 Operating Voltage ( V )D.C. 3~20 Sound Ouput at 10cm (dB) ≧90   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)