This is a Emergency Bright Source 4ft Single 23w LED Batten fitting in cool white, designed to replace traditional 1 x 36w T8 Fluorescent tube fittings offering energy savings of 36%. With an average life span over 30,000 hours, this averages at over 10 years based on normal use, significantly reducing maintenance costs. The batten also boasts a lumen output of 2760 lumens meaning it has an extremely high lumen per watt. All the specification of the standard batten is still applicable in normal maintained running mode. The emergency backup pack is invisibly integrated into the body of the batten. These fittings come complete with LED Emergency inverter, rechargeable emergency battery stick and Green LED indicator. The batten fittings are often used in warehouses and factories as well as being used to light indoor spaces in applications such as corridor lighting or office areas. Constructed with a robust steel powder coated white body and polycarbonate lens with a integrated Epistar LED Board. This product comes with a 5 year warranty for peace of mind. General Characteristics Wattage [W] 23 Voltage [V] 220 – 240v Lumens [lm] 2760 IP Rating [IP] 20 Colour [K] 4000 (Cool White) Avg. Life [hrs] 30000 Part code 233060