Sparkykit Microphone Sound Sensor Module KY-038 FOR ARDUINO

描述

Interface definition:1 AO: sensor analog output;2 GND: ground;3 VCC: power input, range: 3V-24V.4 DO: digital value output (comparator output)Two road red LED indicator: POWER and SENSOR. POWER: the power indicator will be lit up once powered-on. SENSOR: sensor indicator will be lit up once the sound detected by microphone reaches a certain point.