Operating frequency range, Hz | 100 – 7000 |
Sound pressure level of the telephone at a frequency of 1000 Hz, not less than, dB | 110 |
The module of the electrical impedance of the telephone at a frequency of 1000 Hz, Ohm | 20 ± 4 |
The voltage at the output of the contact microphone when exposed to speech with SPL 104 dB, not less than, mV | 10 |
Weight, no more | 200 г |