1.Signal output indication.

2.Single channel signal output.

3.The output effective signal is low level.

4.When there is sound,outputs low level and the signal light.

5.Can be used for control light , give sound and light alarm working with Photosensitive sensor ,and sound control,sound detect.

6.Circuit board output switch quantity.

7.Size : 32mm*17mm*15mm(length*width*height).

8.Main chip: LM393, Electret condenser microphone.

9.Working voltage:DC 4-6V.