Designed to work with radio communication sets.
Suitable for operation at temperatures from minus 50 ºС to 55 ºС and high relative humidity to 100% at temperature of 35 ºС.
| Operating frequency range, Hz | 150 – 7000 |
| The module of the electrical impedance of the telephone at a frequency of 1000 Hz, Ohm | 300 ± 60 |
| The microphone impedance module at a frequency of 1000 Hz, Ohm | 300 ± 60 |
| Paraphonic sensitivity of the microphone, not less than, mV / Pa | 0,4 – 1,1 |
| The response of the phone at a frequency of 1000 Hz, not less than, Pa | 6 |
