HCSR505 Small Human Body Induction Module Product Parameters: Wide operating voltage range: DC 4.5V to 20V Detection distance: up to 3 meters (118 inches) Ultralow power consumption: quiescent current less than 50 microamps Ideal for batterypowered automatic control products, especially those using dry cells Key Features: Compact, lightweight design suitable for integration into small devices Advanced infrared sensing technology for reliable motion detection sensitivity for accurate response to human presence Stable performance even at low voltage levels Function: Automatic motion detection: when a person enters the sensing range, the module outputs a signal Automatic delay: when the person leaves, the signal is maintained briefly before switching to a low output Simple and efficient integration into electronics for automation tasks Applications: Human body induction lighting systems for energyefficient illumination Batterypowered automatic control devices requiring precise motion detection Interactive toys and electronic projects triggered by human presence Benefits: Saves energy by activating devices only when needed Extends battery life due to low power consumption Easy to implement in a wide range of electronics thanks to its small size and broad voltage compatibility Performance Highlights: Detects human movement accurately up to 3 meters Works efficiently in low voltage environments Built with strong reliability for longterm use in various environments