{"product_id":"seren-led-recessed-downlight-30-40w-tri-wattage-cct-dali-white","title":"Seren LED Recessed Downlight 30-40W Tri-Wattage CCT DALI - White","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Knightsbridge Seren is a 220mm recessed LED downlight with switchable wattage (30W, 35W or 40W) and switchable colour temperature (3000K, 4000K or 5000K), controlled via DALI2 protocol. The die-cast aluminium housing contains SMD LED modules behind an opal polycarbonate diffuser, delivering 3,665-4,900 lumens depending on the wattage and CCT combination selected. The DALI2 control gear integrates into networked building control systems or simple room control setups.\u003c\/p\u003e\n\u003cp\u003eDesigned for commercial spaces requiring adaptable lighting across different zones or usage scenarios, the Seren suits retail spaces, offices, corridors and reception areas where light levels and colour temperature may need to change throughout the day or between different room functions. The 200mm ceiling cut-out fits standard commercial ceiling grids and solid ceilings with a minimum 100mm void above. The fitting arrives with plug-and-play connectors to simplify installation and reduce on-site wiring time.\u003c\/p\u003e\n\u003cp\u003eThe aluminium housing is powder-coated white to integrate cleanly with white or off-white ceiling finishes. The IP40 rating (IP20 from above) allows the fitting to be used in dry indoor environments but not in areas exposed to water ingress. The 110° beam angle provides wide area coverage, reducing the number of fittings needed to achieve even illumination across a large ceiling plane. The L70B50 rating of 50,000 hours indicates that the LEDs will maintain at least 70% of their initial output for 50,000 hours, reducing maintenance frequency in high-ceiling or difficult-to-access installations.\u003c\/p\u003e\n\u003cp\u003eThe switchable wattage allows a single SKU to be adjusted on-site to balance light output against energy consumption, while the tri-CCT flexibility means the same fitting can deliver warm white (3000K) for hospitality areas, neutral white (4000K) for general office use, or cool white (5000K) for task-heavy environments. The constant current driver operates on 230V 50Hz mains and the fitting is compatible with Knightsbridge's EMKIT2 emergency lighting module for applications requiring maintained or non-maintained emergency backup.\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\u003e220 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecessed Depth\u003c\/td\u003e\n\u003ctd\u003e69.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Void\u003c\/td\u003e\n\u003ctd\u003e100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-out Diameter\u003c\/td\u003e\n\u003ctd\u003e200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eAluminium\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\u003eII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP Rating\u003c\/td\u003e\n\u003ctd\u003eIP40 (IP20 from above)\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\u003eLamp Technology\u003c\/td\u003e\n\u003ctd\u003eSMD LED\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\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\u003eB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Angle\u003c\/td\u003e\n\u003ctd\u003e110\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCCT\u003c\/td\u003e\n\u003ctd\u003e3000\/4000\/5000 K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Colour\u003c\/td\u003e\n\u003ctd\u003eCCT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens\u003c\/td\u003e\n\u003ctd\u003e3665\/3460\/3600\/4275\/4230\/4130\/4710\/4745\/4900 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumens (Light Source only)\u003c\/td\u003e\n\u003ctd\u003e6510 lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e30 \/ 35 \/ 40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficacy\u003c\/td\u003e\n\u003ctd\u003e179.7 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\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_6496236_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_1815908.pdf\" target=\"_self\"\u003eProduct Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the wattage and CCT selected?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoth wattage (30W, 35W or 40W) and colour temperature (3000K, 4000K or 5000K) are adjusted via switches on the driver unit before installation. This allows a single product to be configured for different applications on-site without stocking multiple SKUs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is DALI2 and do I need it?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDALI2 is a digital lighting control protocol that allows the fitting to be controlled via a networked building management system or simple room controller. If you're installing in a commercial space with centralised lighting control, DALI2 is required. For standalone mains-switched installations, a non-DALI version may be more appropriate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat ceiling void is needed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe fitting requires a minimum 100mm void above the ceiling surface. The recessed depth of the fitting itself is 69.5mm, with the remaining clearance allowing for heat dissipation and driver placement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used with emergency lighting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The Seren is compatible with Knightsbridge's EMKIT2 emergency lighting module, which provides maintained or non-maintained emergency backup. The emergency kit is sold separately.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":45293731479819,"sku":"SER3040DALI","price":55.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/1715488_e9a514aa-3b66-4240-9a57-a6c8a03bd4d7.jpg?v=1714663400","url":"https:\/\/niori.co.uk\/products\/seren-led-recessed-downlight-30-40w-tri-wattage-cct-dali-white","provider":"Niori","version":"1.0","type":"link"}