{"product_id":"mr11-halogeenikohdelamppu-gu4-10w-12v-2800k","title":"MR11 Halogen Spotlight GU4 10W 12V 2800K 30° – small spotlight, glass reflector","description":"\u003cp\u003eThe MR11 halogen spotlight is a small low-voltage lamp, especially suitable for small spotlights, chandeliers, display cases, and decorative lighting. With a diameter of only 35 mm and a beam angle of 30°, it produces a soft spotlight, and the warm 2800K tone is the natural color temperature of a classic halogen lamp — an authentic, warm white light that accentuates natural colors. The glass reflector provides bright and natural light distribution.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRequires a 12V transformer. GU4 base — not to be confused with GU5.3 (MR16) base.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv class=\"product-notice product-notice--warning\"\u003e\n  \u003cp\u003e\u003cstrong\u003e⚠ Order Item\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003eThis product is an order item — delivery time is approximately \u003cstrong\u003e1–1½ weeks\u003c\/strong\u003e from order. Please take this into account if you need the lamp quickly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLamp Type: MR11 halogen spotlight (low-pressure technology)\u003c\/li\u003e\n  \u003cli\u003eBase: GU4 (two-pin, 4 mm pin spacing)\u003c\/li\u003e\n  \u003cli\u003eVoltage: 12 V (requires a transformer)\u003c\/li\u003e\n  \u003cli\u003ePower: 10 W\u003c\/li\u003e\n  \u003cli\u003eColor Temperature: 2800 K (classic halogen natural tone)\u003c\/li\u003e\n  \u003cli\u003eBeam Angle: 30° (spotlight)\u003c\/li\u003e\n  \u003cli\u003eColor Rendering Index (CRI): Ra 100 (typical for halogen)\u003c\/li\u003e\n  \u003cli\u003eReflector Type: Glass\u003c\/li\u003e\n  \u003cli\u003eLifespan: typically 2,000–4,000 hours\u003c\/li\u003e\n  \u003cli\u003eDimmable: Yes (with compatible dimmers)\u003c\/li\u003e\n  \u003cli\u003eDiameter: 35 mm\u003c\/li\u003e\n  \u003cli\u003eLength: 35 mm\u003c\/li\u003e\n  \u003cli\u003eProduct Code: HC301201030\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eCompatibility and Installation\u003c\/strong\u003e\u003c\/summary\u003e\n\n\u003cp\u003e\u003cstrong\u003eRequires a 12V transformer\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis is a 12V low-voltage lamp that requires a 12V transformer to operate. The transformer converts the household 230V mains voltage to 12V. Compatible transformers (both electronic and magnetic) can be found in our selection under \u003ca href=\"\/en\/collections\/muuntajat\"\u003eElectrical Supplies → Transformers\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCheck transformer wattage\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe transformer's wattage must match the lamp (or the total wattage of multiple lamps). For example, for one 10W lamp, the transformer must be at least 10W. For multiple lamps, calculate the total wattage and choose a transformer accordingly — it's often wise to have a small reserve (e.g., four 10W lamps = 40W, choose a 50–60W transformer).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e2800K — classic halogen tone\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis lamp produces 2800K warm white light, which is the natural color temperature of a traditional halogen lamp. The tone is:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSlightly more neutral than 2700K (which is incandescent-like warm)\u003c\/li\u003e\n  \u003cli\u003eSlightly warmer than 3000K (which is a more neutral warm white)\u003c\/li\u003e\n  \u003cli\u003eAuthentic halogen tone for a lamp burning at full power\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eParticularly suitable for situations where a natural warm ambiance is desired — households, restaurants, hotel spaces, display cases, and accent lighting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMR11 vs MR16 — an important distinction\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eMR-type low-voltage spotlights are available in several sizes:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMR11\u003c\/strong\u003e — diameter \u003cstrong\u003e35 mm\u003c\/strong\u003e, base \u003cstrong\u003eGU4\u003c\/strong\u003e (4 mm pins) — this product\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMR16\u003c\/strong\u003e — diameter 51 mm, base GU5.3 (5.3 mm pins) — larger alternative\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese are not interchangeable — different bases and different sizes. Check the fixture's base and the lamp's size requirement before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTypical applications\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSmall spotlights and display case lighting\u003c\/li\u003e\n  \u003cli\u003eChandeliers and decorative lighting where a small spotlight is needed\u003c\/li\u003e\n  \u003cli\u003eExhibition lighting and illumination of artworks (in the background, not as a main subject due to prolonged exposure)\u003c\/li\u003e\n  \u003cli\u003eHotel and restaurant premises\u003c\/li\u003e\n  \u003cli\u003eOld decorative luminaires where MR11 size is standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eHalogen lamp — usage considerations\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA halogen lamp gets hot during use — do not touch the glass surface when the lamp is on or has just been turned off. The lifespan is typically \u003cstrong\u003e2,000–4,000 hours\u003c\/strong\u003e, which is significantly shorter than LED alternatives (15,000–25,000 h). However, halogen retains its advantages with \u003cstrong\u003eperfect CRI 100 color rendering\u003c\/strong\u003e, which is ideal for professional use (artworks, jewelry, colorful products).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation checklist\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003eCheck that the fixture has a GU4 base (not GU5.3)\u003c\/li\u003e\n  \u003cli\u003eCheck that a 12V transformer with sufficient power for the total wattage of the lamps is in use\u003c\/li\u003e\n  \u003cli\u003eCheck that the lamp dimensions (Ø35 × 35 mm) fit the fixture\u003c\/li\u003e\n  \u003cli\u003eTurn off the power before installation — do not touch the lamp glass with your fingers (grease can shorten lifespan)\u003c\/li\u003e\n  \u003cli\u003eInstall the lamp and turn on the power\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eConsider LED alternative\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf energy saving and longer lifespan are important, consider \u003ca href=\"\/en\/collections\/gu5-3-led-kohdelamput\"\u003eMR11 LED spotlights\u003c\/a\u003e, which use about 80% less energy and last up to 25,000 hours. However, halogen retains its advantages with perfect CRI 100 color rendering, which is particularly important for illuminating artworks and jewelry.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Lumenled Oy","offers":[{"title":"10W \/ GU4","offer_id":56828998811992,"sku":"HC301201030","price":5.65,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/2171\/6917\/files\/HC301202030_8df14855-fb4b-4355-8ee3-c64072757ad5.webp?v=1772525798","url":"https:\/\/www.lumenled.fi\/en\/products\/mr11-halogeenikohdelamppu-gu4-10w-12v-2800k","provider":"Lumenled Oy","version":"1.0","type":"link"}