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More Details About Anti-Vandal Telephone Handset

 

  Handset Microphone specification                                           

Item:  Electret Condenser Microphone
Model Number:  Microphone SG9070
Frequency range  100-8000Hz
Sensitivity  56±2 dB
Output Impedance  Low Impedance
Directivity  Unidirectional
Standard operation voltage  4.5V
Sensitivity reduction  Within -3dB at 1.5V
Current consumption  Max 0.5mA
Operation Temperature  -30℃ to +70℃
Storage Temperature  -40℃ to +85℃
Weight  Less than 1.0g

  Handset receiver specification                                                      

RECEIVER
Model Number:  R3518M150H
ITEMS  SPECIFICATIONSCONDITIONS
IMPEDANCE  150 ± 20% ohm ( at 1 KHz,60mV input )
SOUND PRESSURE LEVEL  97 ± 3 dB SPL ( at 1 KHz, 0dBSPL = 20μPa )

  Input 60mVrms, with B&K artificial ear 4153

INPUT POWER (NOM./MAX.)  0.03W /0.25W

  0.03W / 0.25W

HARMONIC DISTORTION  ≤5%300<f≤3400Hz
OPERATING TEMPERATURE  –30°C to +70°C
NET WEIGHT  APPROX. 35.0gram

  Drawing of Anti-vandal Telephone Handset with Switch              

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Enquiry For Anti-Vandal Telephone Handset With Switch