Our design ? Microphones
Microphone - electroacoustic device for converting sound waves into electrical. It is used in telephony, broadcasting, television, PA system and recording.
Microphones classified on the basis of the transformation of acoustic vibrations into electrical and divided into electromagnetic, electromagnetic, electrostatic (condenser and electret), coal and piezoelectric.
1. 
Chestnut-3 Acoustic Range - 7 m, the maximum length of the line - 350 m, signal to noise ratio - 65 dB, the coefficient of nonlinear distortion - 0,4%, the frequency range - 150 ... 15000 Hz, the depth of PTAs - 57 dB, AGC speed - 0.4 seconds, the output voltage - 250 mV, voltage - 6 - 12 V, current consumption - 20 mA, operating temperature - -5 ... +50 ° C size - 7 ? 28 mm
Price:
$ 12.00 
See product or service 2. 
Chestnut-2 - Chestnut Speakers range - up to 6m, the length of the line - up to 300 meters, signal to noise ratio -> 55 dB, the coefficient of nonlinear distortion - 0,6%, the depth of AGC - 53 dB, AGC speed - 0.4 seconds, the output voltage - 250 mV, voltage - 6 ... 12 V, current consumption - 30 mA, the working temperature range - from -5 to +50 degrees, a frequency range - from 150 Hz to 15 kHz, overall dimensions - 10h47 mm
Price:
$ 12.00 See product or service 3. 
Kashtan-1 - Chestnut Speakers range - up to 6m, the length of the line - up to 300 meters, signal to noise ratio -> 49 dB, the coefficient of nonlinear distortion - 0.5%, the output voltage - 250 mV, voltage - 6 ... 12 V, current consumption - 30 mA, the working temperature range - from -5 to +50 degrees, a range of frequencies - from 150 Hz to 15 kHz , overall dimensions - 7h30 mm
Price:
$ 10.00 See product or service 
