Product description:
- Main chip: LM393, electret microphone
- Working voltage: DC 4 ~ 6V
- Has the signal output instructions
- Single signal output.
- Effective signal output for low level.
- Output low level and signal light will on when there has voice.
- Can be used for sonic lamp, with photosensitive sensors act as sound and light alarm, also can be used in the occasion of voice control and sound detection.
- Circuit boards output switch value.
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