HALJIA LM393 Sound Detection Sensor Module Microphone Compatible with Arduino

Chip: LM393, electret 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. Packing List:1 x LM393 Sound Detection Sensor Module