Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      M20H4A8DJ9 Product Number M20H4A8DJ9 Description Enquiry Send Enquiry Specification Rated Impedance (Ω±15%) 8 Rated Power (W) 0.25 Max Power (W) 0.3 Resonant Frequency (Hz±20%) 1200 Frequency Range Fo (Hz) 7000 Sound Pressure Level (±3dB) 81 Operating Temperature (℃) -20 ~ +55 Magnet Size (mm) 8x1 Size (mm) Dia 20 Size (mm) Height 4.0   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)