{"product_id":"energizer-4-2w-dimmable-led-gls-bulb-b22-2700k-warm-white-470lm","title":"Energizer 4.2W Dimmable LED GLS Bulb B22 2700K Warm White - 470lm","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Energizer 4.2W LED GLS is a B22 bayonet-fitting bulb delivering 470 lumens of 2700K warm white light. The bulb replaces a traditional 40W incandescent while consuming just 4.2W, and is fully dimmable when paired with compatible dimmer switches, allowing light levels to be adjusted from full brightness down to a low glow.\u003c\/p\u003e\n\u003cp\u003eDesigned for table lamps, ceiling pendants, wall lights and any fitting with a B22 bayonet socket, the GLS (General Lighting Service) shape is the classic bulb profile that fits most domestic lampholders. The 2700K colour temperature produces a warm, yellowish-white light that suits living rooms, bedrooms and dining areas where a cosy tone is preferred over cooler daylight-spectrum LEDs.\u003c\/p\u003e\n\u003cp\u003eThe bulb carries a 15-year lifespan rating based on average domestic usage patterns, reducing the frequency of replacements compared to halogen or incandescent bulbs. The frosted glass envelope diffuses the LED chip evenly across the bulb surface, avoiding the bright-spot effect of some cheaper LEDs. Rated at Energy Class E under the updated 2021 EU energy labelling scale.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eWattage\u003c\/td\u003e\n\u003ctd\u003e4.2W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLumen\u003c\/td\u003e\n\u003ctd\u003e470lm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Shape\u003c\/td\u003e\n\u003ctd\u003eGLS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLamp Base\u003c\/td\u003e\n\u003ctd\u003eB22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnergy Rating\u003c\/td\u003e\n\u003ctd\u003eE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKelvin\u003c\/td\u003e\n\u003ctd\u003e2,700K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour Temperature\u003c\/td\u003e\n\u003ctd\u003eWarm White\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\u003eLED or Halogen\u003c\/td\u003e\n\u003ctd\u003eLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eIs this bulb dimmable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe packaging indicates dimmable functionality, but the specification table states 'No'. Contact us to confirm dimmer compatibility before purchasing if dimming is required. Some LED bulbs exhibit partial dimming behaviour or flicker with certain dimmer models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the 15-year lifespan mean in hours?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLED bulb lifespan ratings typically assume 3 hours of daily use. A 15-year rating would translate to approximately 15,000-16,000 hours of total operating time, though actual lifespan depends on usage patterns, heat dissipation in the fitting, and mains voltage stability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in enclosed fittings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMost Energizer LED GLS bulbs tolerate enclosed fittings, but heat buildup in fully sealed or recessed housings can shorten LED lifespan. For enclosed downlights or bathroom ceiling fittings with no ventilation, check the packaging or contact Energizer directly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's the difference between B22 and E27?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eB22 is a bayonet fitting with two pins that twist-lock into the socket, common in UK and Commonwealth markets. E27 is an Edison screw fitting that threads into the socket, more common in Europe and North America. The two are not interchangeable without an adapter.\u003c\/p\u003e","brand":"Energizer","offers":[{"title":"Default Title","offer_id":46075002519819,"sku":"S29775","price":1.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/S29775_1_251f1878-8460-428e-8c00-062979239bd4.jpg?v=1730316601","url":"https:\/\/niori.co.uk\/products\/energizer-4-2w-dimmable-led-gls-bulb-b22-2700k-warm-white-470lm","provider":"Niori","version":"1.0","type":"link"}