Sound detection sensor module sound sensor LM393 horn fit for Arduino

-1. size: length 32mm X width 17mm X height 15mm
2. main chip: LM393, electret microphone
3. working voltage: DC 4~6V
4. 

• 1. With signal output indication.

• 2. Single signal output.

• 3. The output valid signal is low level.

• 4. When there is sound, the output is low and the signal light is on.

• 5, can be used for voice control lights, with photosensitive sensors for sound and light alarm, as well as sound control, sound detection occasions.

• 6. Circuit board output switch value!