Features: This human body sensors alarm with built in light features a 120dB alert that 15 second alerts upon detecting human/animal movement, combining PIR technology and auto off function for stable home security. Equipped with 60° horizontal and 20° vertical detection angles ( ranges), this compact plastic device operates on 3xLR44 batteries without wiring, ideal for fast setup as a portable security solution. Perfect for homeowners, renters, and pet owners seeking not invasive defense for temporary spaces like dorm rooms, vacation rentals, or storage units. Install effortlessly in entryways, garages, or dark corridors to deter intruders while providing motion activated lighting during nighttime security breaches. Its discreet design and maintenance easy operate make it essential for enhancing apartment security, office safety, or warehouse monitoring systems with fast motion detection. Specifications: Component : plastic Size: about 24x38x67mm/0.94x1.49x2.63inch Package Includes: 1xSensor Alarm note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.