Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      G-4020S Product Number G-4020S Description Enquiry Send Enquiry Specification Dimensions( Dia (mm) ) 40x20 Input Normal (W) 1.0 Input Max (W) 1.5 IMP (Ω) 8 Fo (Hz) 550 SPL (dB) 86 Frequency Range (Fo~Hz) Fo-20k MGNT Size (mm) ø11x2 Diaphragm Cloth   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)