For Added Security For Your Property, This Subtle Yet Effective Motion-activated Light Is Dual-headed For Maximum Movement Detection & Lighting Up.light Activates For 10-30 Seconds, When Movement Is Detected – The Perfect Length Of Time To Attract Your Attention, But Without Lighting Up Longer Than Necessary.its Ip 44 Weatherproof Enclosure Means That It’s Durable In All Elements, All Year Round & Has A Passive Infra-red (pir) Sensor Detection Effective Up To 8m.with No Mains Required & Just Needing 3 Aa Batteries, It Takes Away The Need For Ugly Wiring. Effective, Subtle & Smart!