{"product_id":"49w-5ft-led-surface-light-fitting-with-emergency-white","title":"49W 5ft LED Surface Light Fitting with Emergency - White","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Knightsbridge PRCLEDEM is a 49W 5ft LED surface light fitting with integrated emergency backup, delivering 6110lm at 4000K through an opal polycarbonate diffuser mounted in a white pressed steel housing. The emergency function provides 600lm output for 3 hours on battery backup, configurable as maintained, non-maintained or switched depending on installation requirements.\u003c\/p\u003e\n\u003cp\u003eDesigned for commercial, retail, educational and care facility environments, the 1490mm length suits standard 5ft modular ceiling grids and provides wide-area ambient lighting across corridors, classrooms, wards and retail floors. The IP20 rating limits use to indoor dry locations, while the 120-degree beam angle gives broad even distribution without harsh shadows. Surface mounting to ceiling joists or battens requires access to mains supply for the constant current LED driver and battery charging circuit.\u003c\/p\u003e\n\u003cp\u003eThe pressed steel body and polycarbonate diffuser construction balance durability with light weight, making overhead installation manageable without specialised lifting equipment. The opal diffuser conceals the LED array while maintaining high efficacy at 153lm\/W. The 50,000-hour L70B50 rating means the LED module should retain at least 70% of initial output after approximately 12 years of continuous use in typical commercial lighting schedules. The 5-year warranty covers the LED driver and housing but excludes the emergency battery, which typically requires replacement every 3-4 years depending on charge cycles.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e1490 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e198 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProjection\u003c\/td\u003e\n\u003ctd\u003e68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003ePressed steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction 2\u003c\/td\u003e\n\u003ctd\u003e\u0026amp; polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003eI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e230V 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiffuser\u003c\/td\u003e\n\u003ctd\u003eOpal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmergency\u003c\/td\u003e\n\u003ctd\u003eMaintained \/ Non-maintained \/ Switched\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Technology\u003c\/td\u003e\n\u003ctd\u003eLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimmable\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eL70B50\u003c\/td\u003e\n\u003ctd\u003e50000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Rating (Class) post 2021 SLR\u003c\/td\u003e\n\u003ctd\u003eD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCCT\u003c\/td\u003e\n\u003ctd\u003e4000 K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Colour\u003c\/td\u003e\n\u003ctd\u003eCool White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens\u003c\/td\u003e\n\u003ctd\u003e6110 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens (Light Source only)\u003c\/td\u003e\n\u003ctd\u003e7750 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens (Em. mode)\u003c\/td\u003e\n\u003ctd\u003e600 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e49\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficacy\u003c\/td\u003e\n\u003ctd\u003e153.455 lm\/W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCRI\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDriver Type\u003c\/td\u003e\n\u003ctd\u003eConstant Current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty Information\u003c\/td\u003e\n\u003ctd\u003e(excluding battery)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/products_2309857_datasheet.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/manual_787284.pdf\" target=\"_self\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the emergency mode options?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe fitting can be configured as maintained (emergency LEDs on constantly, switching to battery on mains failure), non-maintained (emergency LEDs off until mains failure) or switched (emergency LEDs controlled by switch in normal operation). Configuration is set during installation by an electrician.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the emergency backup last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated battery provides 3 hours of emergency lighting at 600lm output when mains power fails. The battery recharges automatically when mains power is restored.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this suitable for schools and care homes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The combination of high-output general lighting with emergency backup meets the requirements of educational facilities, care homes, hospitals and other environments where emergency lighting is mandated by building regulations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the fitting mounted?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSurface mounting to ceiling joists or battens via fixings through the rear of the steel housing. Mains supply connection is made inside the housing to the constant current LED driver and battery charging circuit. Installation requires a qualified electrician.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":45293918388491,"sku":"PRCLEDEM","price":104.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/134638_ac0cef6b-5464-4417-9522-ed95fb94ba96.jpg?v=1714666264","url":"https:\/\/niori.co.uk\/products\/49w-5ft-led-surface-light-fitting-with-emergency-white","provider":"Niori","version":"1.0","type":"link"}