KY037 Sensitivity Microphones Sound Detection Module Designed to capture subtle sound variation, enabling accurate volume detection and voice controlled projects. Compact design with adjustable sensitivity via built in potentiometer; low power consumption suitable for long term projects, especially those powered by batteries. For beginners and hobbyists, easy to integrate with standard pin headers; minimal setup and smooth user experience. Operating from DC 4V to 6V; provides both analog and digital (DO) outputs for flexible signal processing; supports precise sound intensity readings or threshold detection. Key attributes: function sound detection; compatibility standard pin headers; size compact; performance adjustable sensitivity and dual outputs. Use scenarios: Voice activated controls and sound triggered actions in microcontroller projects using analog or digital output. Ambient sound level monitoring for noise control in classrooms, offices, or labs. Sound activated alerts or alarms in security systems, automation setups, or hobby projects.