This module allows you to detect when sound has exceeded a set point you select. Sound is detected via a microphone and fed into an LM393 op amp.
The sound level set point is adjusted via an on board potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.
- Chip: LM393
- Electric microphone
- Working voltage: DC 4 ~ 6 V
- With a signal output instruction. One single channel output. low level output signal
- When there is sound output low, lights lit. Can be used for voice-activated lights, with light sensors make a sound and light alarm, and voice control, voice detection occasions.