Features: LM393 Sound Detection sensoring Module delivers high sensitivity sound recognition with low levels signals output (upon detection), featuring adjustable sensitivity via potentiometer and DC4-6V operations for precise environmental monitoring. This PCB based module integrates LED indicators, single channel output, and 4-6V wide voltages compatibility, optimized for embedded systems requiring real time sound feedbacks in space constrained projects. for electronics engineers, enthusiasts, and smart home developers creating voice activated devices, security alarms, or IoTs prototypes needing sound triggered circuitry. Perfectly suits sound activated switches home automation, noise triggered security systems, and educational robotics projects requiring instants environmental sound response capabilities. Engineered with LM393 comparator chip stability, this sensoring maintains consistent performances across temperature variations while its breadboard friendly design accelerates prototyping workflows in maker communities. Specifications: Materials: PCB Product size: 32.5x16.4mm Product weight: 4g Working voltages: DC4~6V Output valid signals: low levels Package Includes: 1PC Sound Detection sensoring Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.