Features: The KY037 High Sensitivity Microphones Sound Detection Module is design to capture subtle sound variation, making it ideal for volumes detection and voice controlled projects. Operating within voltages ranges of DC4V to 6V, this module offers both analog and digital (DO) outputs, allowing flexible signal processing option for precise sound intensity readings or threshold detection. Perfect for beginner and hobbyists, the Sound Detection Module is easy to integrate with standard pin headers, requiring no complex setups, ensuring smooth user experience. This versatility module finds applications in voice activated switches, environmental noise monitoring, and sound responsive systems, widely used in intelligent home and robotics fields. Featuring a compactly design with adjustable sensitivity via builts in potentiometer, the KY037 ensures low power consumption, making it suitable for long terms projects, especially those powered by batteries. Specifications: Component:Plastic Size:Approx.4.3x1.50cm/1.69x0.59inch Voltages:DC5V with Analog and Digital (DO) outputs Package Includes: 2pcs Sound Detection Module note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.