KY037 High Sensitivity Microphone Voice Detection Module is designed to capture subtle sound changes and is ideal for volume detection and voice control projects Operating within the voltage range of DC4V ~ 6V, this module features both analog and digital (DO) outputs, allowing flexible signal processing options for accurate acoustic strength readings and threshold detection This versatile module can be applied to voice activation switch, environmental noise and sound response system, widely used in the field of intelligent home and robotics Perfect for beginners and enthusiasts, the sound detection module can be easily integrated with a standard pin header to ensure smooth users without the need for complicated setup The KY037 features a compact design with built-in potentiometer and adjustable sensitivity, which ensures low power consumption and is especially suitable for long-term battery-powered projects