Features: The SR602 Human Body sensory Module accurately detects human present with its pyroelectric sensory, offering 20mm motion sensitivity for environmental monitoring in diverse settings. Featuring low power consumption and selectable output modes, this compact module ensures extended battery life and seamless integration with microcontrollers or switcher circuits. Ideal for enthusiasts, automation engineers, and security professional seeking precise motion detection solution for residential or commercial applications. Enhances lighting systems, automatic door controls, and security alarms to optimize home automation efficiency and safety in living spaces or workplaces. This plastic sensory deliver complex environments while maintaining accurate radiation detection capabilities. Specifications: Component:Plastic Size:Approx.10mm/3.93inch Induction distance: 5 meters long; 0-3.5M is recommended. Power supply: 3.3V-15V Package Includes: 10Pcs Induction switcher sensory Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.