The ENER-J 24W 4000k LED Emergency Ceiling Light offers long-lasting use with high luminance ideal for internal and external use. Fitted with a microwave presence detector so that the light is only switched on while it detects a body. The microwave sensors have the added ability to detect activity through some walls and doors, depending upon their material makeup. This light is also fitted with a three-hour maintained emergency option, which keeps the unit illuminated for three hours should the power fail. Fitted with a high output diffuser with up to 2200 Lumens, the glare-free light has an IP65 rating and is suitable for use in both indoor and outdoor spaces.