Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      EM9745 Product Number EM9745 Description Ø9.7x4.5(H)mm Enquiry Send Enquiry Specification Sensitivity Range (dB) (0dB=1V/Pa. 1KHz) -34 ± 3dB; -36± 3dB ; -38 ±3dB; -40 ± 3dB ; -42 ± 3dB ; -44 ± 3dB ; Directivity Omnidirectional Impedance Low impedance Current Consumption Max. 0.5mA Standard Operation Voltage 4.5V Sensitivity Reduction Within -3dB at 1.5V S/N Ratio (dB) More than 60dB   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)