3pcs Microphone Voice Sound Sensor Module For Arduino

Description: This is microphone voice sound sensor module for Arduino Brand: KEYES Model: KY-038 Adopt LM393 main chip Electric condenser microphone Features Single channel signal output Low level output signal used for sound control light Great module for sound alarm system Working voltage: DC 4-6V Interface definition: AO: analog output sensor GND: ground VCC: Power supply input range: 3V-24V. DO: Digital Output (comparator output) Two red LED indication: POWER and SENSOR. POWER: Power is off. SENSOR: When the microphone senses sound reaches a certain value, this LED light. Package included: 3 x Voice sound sensor module