Two way radio earphone
Speaker Dia : 23mm
Impedance : 32Ω±15%
product Sensitivity:110±5dB@1KHz
Microphone Sensitivity: -47±3dB@1KHz 2.2KΩ3V 0dB=1v/pa
Reliability Testing
imposing 1000g of static loading toward line –out , bending around 60 degree 30 times per minute, total swing 8000 times，No. abnormal appearance and function
Earphone will drop repeatly from the high place of 1000 mm to the floor (tile/cement) 6 times freely，No crack or break off , No. abnormal appearance and function
begin with Low Temp.test at -20 ℃ for 2H ,and then High Temp.test at 80℃ for 2H , after returning to normal temperature , Fix the plug into test box , cable part tie with force testing device，shake slowly test box’s arm , Stop shaking when force testing device ‘s finger Point at 5KG . Static Load one min.，No crack or break off , No. abnormal appearance and function
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