3Pcs RobotDyn® Microphone Sound Measure Module Voice Sensor Board with Digital and Analog

Schematic http img banggood com file products 20171225001847SoundDetect pdfFeature The Sound measure is Sensor module is based on a microphone and a power amplifier It can be used for measuring the sound strength of the environment The value of digital output can be adjusted by the potentiometer Also can use Analog output to get an analog variable signal For Sound Measure has two outputs AO analog output real time output voltage signal of the microphoneDO when the sound intensity reaches a certain threshold the output high and low signal The threshold sensitivity can be adjusted via potentiometer on the sensorPackage includes 3 x Sound Measure Module