Product Name: Lm393 Microphone Voice Sound Sensor Module for Arduino Analog Digital Output Sensors Adopt Main Chip Modules Model NO.: FUT3135 Customized: Customized Certification: CE Production Process: Normal Wirewound Output Signal Type: Analog Type Trademark: FUT Transport Package: ESD Antistatic Bag Specification: 3g Origin: China HS Code: 85340090 Product Description Description:This is microphone voice sound sensor module for ArduinoModel: KY-038Adopt LM393 main chipElectric condenser microphoneFeatures Single channel signal outputLow level output signal used for sound control lightGreat module for sound alarm systemWorking voltage: For DC 4-6VInterface definition:AO: analog output sensorGND: groundVCC: 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.