5Pack HCSR505 Mini Infrared Motion Sensors Delivering fast and reliable motion detection, these HCSR505 sensors provide 3.3V active and low 0V idle output with an 8second ±30% delay time. Designed for precise infrared detection, they trigger instantly to enable smooth and seamless automation in your projects. Key Features Wide voltage operation from DC 4.5V to 20V ensures compatibility with a variety of systems. Ultralow quiescent current (<60μA) minimizes power usage, making them ideal for batterypowered devices. Compact size allows easy integration into embedded systems or installations where space is limited. Durable construction with pure copper conductors and robust components for longterm reliability. Operates flawlessly in extreme environments ranging from 20°C to +80°C. Performance and Advantages precision infrared detection responds instantly, improving system responsiveness for lighting, security, and automation applications. Energyefficient design significantly extends battery life, reducing maintenance and replacement cycles. Versatile voltage support accommodates a wide range of power supplies. Practical Applications 1. Motionactivated lighting systems that switch on instantly when movement is detected. 2. Security alarms and monitoring systems for reliable intrusion detection in residential or commercial settings. 3. Interactive electronics and toys requiring quick motion response without power draw. Compact and efficient, the HCSR505 mini infrared motion sensors offer dependable performance and easy integration for engineers, makers, and installers seeking reliable motion detection in demanding conditions.