HCSR505 PIR Human Body Motion Detector Sensor – Compact, Reliable, and Easy to Use The HCSR505 PIR motion detector sensor offers dependable human body detection in a small, lightweight design. Engineered for ease of integration and consistent performance, it is ideal for numerous automatic sensing applications. Key Features and Benefits: Automatic motion detection with sensitivity for accurate results Simple onemode trigger operation for quick and easy setup Compact and lightweight build for convenient portability and installation Wide operating voltage range: DC 4.5–20V for flexible compatibility Light control duration (dark time) of approximately 2 seconds, fixed setting for stable performance Ultralow voltage operation for energy efficiency and longterm reliability Performance and Specifications: Model: HCSR505 PIR Body Sensing Module Dimensions: Small, unobtrusive housing suitable for spaceconstrained projects Voltage Range: DC 4.5–20V Trigger Mode: Single mode, nonadjustable Light Control (Dark Time): 2 seconds Power Efficiency: Ultralow voltage operation minimizes energy consumption Practical Applications: 1. Movement detection in security systems to alert when an area is entered 2. Automatic lighting control that activates upon detecting presence 3. Activation of proximity switches for interactive or automated devices The HCSR505 is a dependable choice for projects requiring stable motion sensing, from home automation to safety systems. Its small size, ease of use, and broad voltage support make it adaptable to a variety of environments and installation requirements.