Grab'eM Sound Sensor Module(Blue)

This module allows you to detect when sound has exceeded a set point you select. Sound is detected via a microphone and fed into an LM393 op amp.The sound level set point is adjusted via an on board potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.Features:Features high sensitivity, Electret Condenser Microphone (ECM) sensorWith power supply indicator lampComparator output indicator lampAO: sensor analog output, real-time microphone voltage signal outputDO: Digital Output (comparator output), high / low electric level signal outputAnalog quantity outputThreshold rollover electric level outputSensitivity adjusted by potentiometerPower Supply: 3.7-5.5 V DC