Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      A57H8.5A8DJ17 Product Number A57H8.5A8DJ17 Description Enquiry Send Enquiry Specification Rated Impedance (Ω±15%) 8 Rated Power (W) 0.25 Max Power (W) 0.5 Resonant Frequency (Hz±20%) 450 Frequency Range Fo (Hz) 3500 Sound Pressure Level (±3dB) 91 Operating Temperature (℃) -20 ~ +55 Magnet Size (mm) 12.5x1.5 Size (mm) Dia 57 Size (mm) Height 8.5   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)