{"product_id":"sansi-grow-light-bulb-24w-4000k-full-spectrum-daylight-high-cri-etl-listed-5-year-protection","title":"SANSI Grow Light Bulb 24W 4000K Full Spectrum Daylight – High CRI, ETL-listed, 5-Year Protection","description":"\u003cp\u003e\u003cstrong\u003eSANSI 24W Full Spectrum 4000K grow light bulb provides daylight-balanced, full-spectrum supplemental lighting designed to support every phase of indoor plant growth.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor growers who want a single, reliable bulb that mimics natural daylight, the SANSI 24W Full Spectrum 4000K delivers a balanced spectrum across 400–780nm with high color rendering and engineered optics. It combines a near-natural color rendering index, focused light distribution, and advanced thermal design to increase usable light on plants while minimizing heat stress and energy waste. ETL-listed and backed by a five-year protection plan, this bulb is built for consistent indoor horticulture use and longer life.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this bulb reproduce sunlight for plant growth?\u003c\/h3\u003e\n\u003cp\u003eThe SANSI bulb is tuned to a 4000K daylight color temperature and spans the full visible range (400–780nm), giving plants a spectrum close to natural sunlight. High color rendering (Ra near 100) helps ensure pigments and light responses receive accurate wavelengths. This makes it suitable across seedling, vegetative and flowering stages where a broad spectrum is preferred.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e400–780nm full visible spectrum coverage for balanced plant responses\u003c\/li\u003e\n  \u003cli\u003e4000K color temperature replicates daylight appearance\u003c\/li\u003e\n  \u003cli\u003eHigh CRI (Ra ≈ 100) for accurate color and fuller spectral output\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill plants get enough light intensity from a single 24W bulb?\u003c\/h3\u003e\n\u003cp\u003eSANSI optimizes light delivery with secondary optics to boost usable photon output: PPF measured at 36.2 μmol\/s and PPFD about 177 μmol\/s\/m² at 1 ft. That concentrated distribution increases light utilization for small-scale setups or supplemental arrays. For larger or denser canopies, place multiple bulbs or mount closer to target plants for even coverage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePPF: 36.2 μmol\/s for measurable photon output\u003c\/li\u003e\n  \u003cli\u003ePPFD: ~177 μmol\/s\/m² at 1 ft for targeted intensity\u003c\/li\u003e\n  \u003cli\u003eSecondary optical lensing to reduce wasted spill and focus light\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the SANSI design manage heat and reliability?\u003c\/h3\u003e\n\u003cp\u003eInstead of a conventional metal PCB, SANSI uses patented Chip-on-Ceramic (COC) technology soldered directly to a ceramic heat sink. This lowers thermal resistance between the LED junction and sink, moving heat away faster and improving lumen maintenance. The ceramic housing also raises flame-retardant and corrosion-resistance ratings, helping extend rated life up to 25,000 hours.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented COC technology for faster heat conduction\u003c\/li\u003e\n  \u003cli\u003eCeramic body with V0 flame-retardant and WF2 anti-corrosion ratings\u003c\/li\u003e\n  \u003cli\u003eRated lifespan approximately 25,000 hours with improved reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this fixture safe to use around delicate plants and in home spaces?\u003c\/h3\u003e\n\u003cp\u003eThe SANSI bulb emits low infrared and reduced radiant heat, lowering the risk of heat damage from close mounting. Reinforced insulation and non-conductive ceramic construction reduce electrical risk, while ETL listing confirms basic safety standards. These features make it appropriate for indoor gardens, grow tents, shelves, and living spaces where heat and safety are concerns.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow IR output for reduced plant heating and safer close placement\u003c\/li\u003e\n  \u003cli\u003eReinforced insulation and non-conductive ceramic reduce shock risk\u003c\/li\u003e\n  \u003cli\u003eETL-listed and backed by a 5-year protection plan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Growers who need a compact, full-spectrum supplemental light that closely mimics daylight—home hobbyists, small-scale indoor gardeners, and multi-bulb layers in larger arrays. It suits seed trays, counter-top herb stations, propagation racks, and as a daylight-replacing option in spaces where true color rendering and lower heat output matter. If you want a durable bulb with engineered optics and advanced thermal design to maximize usable light while protecting plants and indoor spaces, the SANSI 24W 4000K Full Spectrum Grow Light Bulb is built for that purpose.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use one SANSI 24W bulb for an entire grow tent?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: One bulb can supplement small tents or single shelves, but larger tents need multiple bulbs or closer placement for uniform coverage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How close should the bulb be to plants?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Start 12–24 inches away, monitor leaf temperature and stretch, then adjust distance for desired PPFD and coverage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SANSI","offers":[{"title":"Default Title","offer_id":56833370521940,"sku":"B07BRKT56T","price":48.13,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/sansi-front-packaging-grow-light-bulb.jpg?v=1787040640","url":"https:\/\/gardenluxe.co.uk\/products\/sansi-grow-light-bulb-24w-4000k-full-spectrum-daylight-high-cri-etl-listed-5-year-protection","provider":"Gardenluxe Uk","version":"1.0","type":"link"}