Domus KEY-MR11-3 - 3W LED 12V DC 38° MR11 Shape PC Globe 3000K - DRIVER REQUIRED

The Domus KEY-MR11-3 is a 3 W MR11 LED globe — 12 V DC, 38° beam, Ø35 mm, in 3000 K. Not dimmable. A driver is required. 3-year warranty.

✅ Its title says the most important thing — DRIVER REQUIRED

• ⭐ Saying it in the product name is genuinely good practice, and worth crediting: the 6000 K version of this same lamp does not.
• What you need is a 12 V DC CONSTANT-VOLTAGE LED driver, sized above your total lamp load.
• ⚠ Not a constant-CURRENT driver — the two are not interchangeable and the difference is easy to miss on a product page.
• ⚠ And not an old halogen transformer. ⭐ Those put out AC and expect a load far larger than 3 W, so they will not regulate: you get flicker, buzz, or nothing.
• ⭐ Tell us how many you are running and we will size the driver with you. ⭐ It is the commonest way a low-voltage LED installation goes wrong.

⛔ This lamp has two listings and two datasheets, and they disagree

• ⭐ Both sheets name both SKUs, so this is one lamp pair described twice — ⛔ and the two disagree on output by 25%.
• ⚠ We cannot tell which figure is right, and we are not going to average them. ⭐ Assume 240–300 lm and ask us if the number decides your design.
• ✅ What this listing settles is the size. Ø35 mm confirms it is an MR11 — ⭐ which matters because the 6000 K listing records its lamp type as MR16, and an MR16 is about 50 mm. They do not interchange.
• ⭐ And the warranty is worth carrying across: ⭐ this listing records 3 years; the 6000 K one records none. ⚠ Same lamp pair. Ask us.

⛔ Its IP rating contradicts its own datasheet

⛔ The record says IP20. The datasheet says IP54. ⭐ IP54 is protection against dust and splashing water — genuinely useful on a lamp this small, and it is the difference between using it in a damp cabinet or a covered step and not. ⚠ The driver still has to be sited dry. ⭐ Ask us before relying on IP54 in a wet position.

⭐ 3000 K, and that is the right choice for what an MR11 is for

• ⭐ Warm white. ⭐ The other version of this lamp is 6000 K — a cold blue-white that makes timber, food and warm materials look grey.
• ⭐ An MR11 is a joinery and display lamp — cabinets, shelving, plinths, steps — ⭐ and those are exactly the places 3000 K belongs.
• ⭐ So this is the version we would specify for almost any interior. ⚠ The 6000 K suits inspection, technical or cool-toned display work.
• CRI ≥80, 35,000 hrs, ⛔ not dimmable.

⭐ Why an MR11 rather than an MR16

• Ø35 mm against an MR16's ~50 mm, and 40 mm long.
• ⭐ It hides where the larger lamp cannot — a shallow cabinet top, a slim shelf edge, a plinth, a stair riser.
• ⚠ You give up output. ⭐ 240–300 lm here against several hundred from a typical MR16 — ⭐ so plan on several, and size the driver accordingly.
• ⭐ The 38° beam is a narrow flood: at 1 m it lights a pool about 0.7 m across. Aim it at something.

Where it works

• Joinery, cabinets and shelving — ⭐ where a 50 mm lamp will not fit.
• Plinth, step and threshold lighting.
• Display cases.
• ⚠ Not without a 12 V DC constant-voltage driver.
• ⚠ Not on a halogen transformer, and not on a dimmer.

Specifying it

3 W MR11 LED globe. 12 V DC. Ø35 mm × 40 mm. 38° beam. 3000 K. CRI ≥80. 35,000 hrs. Not dimmable. ✅ 3-year warranty. ✅ A 12 V DC CONSTANT-VOLTAGE driver is required — the title says so, which the 6000 K version does not. ⛔ This lamp pair has two datasheets that disagree on output: 300 lm here, 240 lm on the 6000 K listing. Assume 240–300 lm and ask us if the figure decides a design. ⛔ Its record says IP20; its own sheet says IP54. ✅ Its Ø35 mm confirms this is an MR11, not the MR16 the sibling listing records.

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