This is microphone voice sound sensor module
1.Model: KY-038
2.Adopt LM393 main chip
3.Electric condenser microphone
4.Features Single channel signal output
5.Low level output signal used for sound control light
6.Great module for sound alarm system
7.Working voltage: DC 4-6V
AO: analog output sensor
GND: ground
VCC: Power supply input range: 3V-24V.
DO: Digital Output (comparator output)
Two red LED indication: POWER and SENSOR. POWER: Power is off. SENSOR: When the microphone senses sound reaches a certain value, this LED light.
| Working voltage | DC 4-6V |
| Comparator Circuit | LM393 |
| Power On LED light | LED1 |
| Power supply voltage | 3V-24V |
| Hole Inner Diameter | Approx. 3mm |
| Material | PCB |
| Color | red |
| Board Weight | 5g |
| Size | 35mm x 1Color5mm x 14mm |
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ISD1820 Sound Module Voice Module – OKY3163 