Acoustic tube earpiece surveillance kit EP-0218-N compatible for Nokia THR850 THR880 THR880I
Easy smooth feel PTT and clear voice quality
With durable 360 degree metal back clip
Vigorous, rugged and adaptable designed for tough working environments.
Speaker
Dimension (mm)： ￠15
Sensitivity ： 114±3dB
Impedance： 220Ω
Rated output power： 0.5W
Peak power output： 1W
Microphone
Dimension (mm)： ￠6*5
Sensitivity： -38±3dB
Frequency： 1kHz
Impedance： 2.0V/2.2KΩ
Operation voltage： 1-10V
