{"product_id":"3-5w-led-self-test-emergency-downlight-3000k-white-maintained-or-non-maintained","title":"3.5W LED Self-Test Emergency Downlight 3000K - White (Maintained or Non-Maintained)","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Knightsbridge EMPOWER4 is a 3.5W LED emergency downlight with an integrated self-test facility that performs automatic function checks at pre-programmed intervals. The fitting houses an integrated LiFePO4 (lithium iron phosphate) battery rated for a minimum 3-hour emergency duration, delivering 130 lumens in both mains and emergency mode. A separate green LED charge indicator sits externally to show battery status without needing to access the fitting.\u003c\/p\u003e\n\u003cp\u003eDesigned for corridors, stairwells, circulation areas and rooms requiring maintained or non-maintained emergency lighting, the downlight operates in three modes: maintained (permanently on), non-maintained (off until mains failure), and switched (controlled by a switch in normal operation). The 45mm cut-out fits standard UK ceiling void depths with a minimum 80mm void required above the plaster line. A corridor lens accessory ships in the box, narrowing the beam for longer throw distances in hallway applications.\u003c\/p\u003e\n\u003cp\u003eThe polycarbonate housing and lens are finished in white and rated IP20 for dry internal environments. The pre-wired battery pack connects via a plug-in connector, removing the need to wire terminals during installation. The 3000K warm white LED provides CRI \u0026gt;70 colour rendering across a 140° beam angle. The fitting is Class II double-insulated, requiring no earth connection, and carries a 5-year warranty.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e183 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecessed Depth\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Void\u003c\/td\u003e\n\u003ctd\u003e80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-out Diameter\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate\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\u003eII\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\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e0.35 m\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\u003e30000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCCT\u003c\/td\u003e\n\u003ctd\u003e3000 K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Colour\u003c\/td\u003e\n\u003ctd\u003eWarm White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens\u003c\/td\u003e\n\u003ctd\u003e130 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens (Em. mode)\u003c\/td\u003e\n\u003ctd\u003e130 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e3.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficacy\u003c\/td\u003e\n\u003ctd\u003e35.9 lm\/W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCRI\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;70\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\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_5500905_datasheet.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does self-test mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe fitting performs automatic function and duration tests at pre-programmed intervals without manual intervention. Test results are indicated by the green LED charge indicator, which flashes different patterns to show pass or fail status.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between maintained and non-maintained operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMaintained mode keeps the LED on continuously during normal mains supply and switches to battery power during a mains failure. Non-maintained mode keeps the LED off during normal operation and only illuminates when mains power fails. Both modes are selectable on this fitting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat ceiling void depth is required?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA minimum 80mm void above the ceiling surface is required to accommodate the driver unit and battery pack. The recessed depth of the fitting itself is 32mm, but the external components need the additional clearance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the corridor lens for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe corridor lens narrows the beam pattern from the standard 140° spread to a longer, narrower throw suitable for hallway and corridor applications where light needs to travel further along the length of the space rather than spreading wide.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":45293682983179,"sku":"EMPOWER4WST","price":44.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/1410900_5b2fa275-3a51-44b8-a4db-c4f5327d4733.jpg?v=1714662504","url":"https:\/\/niori.co.uk\/products\/3-5w-led-self-test-emergency-downlight-3000k-white-maintained-or-non-maintained","provider":"Niori","version":"1.0","type":"link"}