The red LED flashes for approximately 20 seconds in response to a person's shadow. Measures against: * Burglary and lock picking * Stalking * Persistent door-to-door sales * Shoplifting and security in stores Comes with a security sticker. Effective for unmanned sales of agricultural products, etc. Batteries: 2 x AA Operating temperature: 0-40°C Detection range: Approximately 2m / Ambient illuminance 200 lux Approximately 1m / Ambient illuminance 100 lux (when installed 2m above the floor) Weight: Approximately 104g (body only, batteries not included) Usable locations: Indoors, entrances, eaves, and other locations not exposed to rainwater Battery life: Approximately 1 year (using alkaline batteries) Accessories: Mounting screws x 3, concrete anchors x 3, security sticker x 1 Please note that the top part will be folded for compact shipping. Please purchase after confirming the profile. #SecurityGoods #SecurityCamera #RiskManagement #SelfDefense #StalkerPrevention