Electromagnetic miniature telephone. Destined for use as a part of hearing aid devices , special sets and other communication facilities.

Technical data

Assigned frequency range, Hz 200-5000
Impedance at the frequency of 1000 Hz, Ohm 250±50
Sensitivity at the frequency 1000 Hz, dB 124±3
Dimensions, mm 9,53x7,2x4,1
Weight , kg 0,001