The electret microphone "M4-B2".Is destined to be used as a part of hearing aid devices, microphone sets and other communication facilities.

Technical data

Sensitivity at no-load operation with the power source voltage (1,2) V at the frequency of 1000 Hz, mV/Pa, no less than 10-20
Deviation of the frequency response from the standard in the frequency range of 200-5000 Hz, dB ±2
The current drawn , mkA, no more than

70

Output resistance , kOhm , no more than

3,5

Level of equivalent sound pressure caused by the microphone's own noises, dB, no more than 28
Dimensions , mm 7,9x5,6x2,7
Weight , gr. no more than 0,7