Domus ZAC-PRO 8 REC IP65 8W TRIO 24V

The Domus ZAC-PRO-8 recessed, 24 V is a linear low-voltage recessed step light — 226 mm long, 12/24 V DC, 8 W, 421–495 lumens, CRI ≥90, IP65, dimmable, in black or white.

⛔⛔⛔ Its record says 240 V. It is a 12/24 V DC fitting.

⭐ Title 24V; datasheet 12/24V DC requiring a constant-voltage driver; record voltage = 240V, ac_dc = AC. ⭐⭐ CONNECTING IT TO MAINS DESTROYS IT INSTANTLY AND IS A SHOCK AND FIRE RISK. ⭐ The title is right and the record is wrong. ⭐ We measured the fault two independent ways — 14 products by datasheet, 26 by title, 12 by both — and the intersection is the answer because each list's false positives are excluded by the other. ⚠ Note especially that LED drivers appear in the title list and are NOT faults: a 12 V driver's input is 240 V AC, correctly recorded, while its title names the output.

⭐ Linear, not round — which changes what it lights

• ⭐ This is the 226 mm rectangular unit; the ZAC-PRO-5 is a Ø115 mm round or a square.
• ⭐⭐ A LINEAR FITTING WASHES A BAND ACROSS A TREAD; A ROUND ONE THROWS A POOL. ⭐ On a wide stair or a broad path that difference is the whole decision — a pool leaves the edges of a 1.2 m tread dark, and it is the edge of a step people misjudge.
• ⭐ SO USE THE LINEAR UNIT WHERE THE TREAD IS WIDE and the round one where it is narrow — ⭐ or where a run of small round fittings is the look you want.
• ⭐ At 421/462/495 lm it is roughly a third brighter than the 5 W unit's 305/348/365, for 60% more power — ⭐ so it is less efficient per lumen, and you are buying the shape and the spread rather than the output.

⚠ 226 mm is a masonry decision

• ⭐ Cutout 210 × 60 mm without the recessed box, 220 × 70 mm with it. ⭐⭐ THE ACCESSORY CHANGES THE HOLE IN BOTH DIMENSIONS, and the decision must be made before cutting.
• ⚠ A 210 mm SLOT IS LONGER THAN A STANDARD BRICK IS TALL and crosses a mortar course — ⭐ so in brickwork it is a cut through a joint rather than a hole in a face. ⭐ Worth confirming with the bricklayer, not just the electrician.
• ⭐ In a poured concrete stair it wants a box cast in at the pour. ⚠ Coring a 210 × 60 mm rectangle after the fact is genuinely difficult and usually looks it.
• ⭐ Its depth is 53.5 mm plus the box — ⭐ check that against the wall thickness before committing, particularly on a single-skin wall.

⭐ Dimmable, which the mains version is not

⭐ This version dims with a dimmable driver; ⛔ the 240 V ZAC-PRO-8 does not. ⭐⭐ ON THE 8 W UNIT THAT MATTERS MORE THAN ON THE 5 W ONE, because 495 lumens across a tread is genuinely bright at close range — ⭐ and over-brightness is the commonest fault in low-level lighting. ⭐ A dimmer lets you set it once on site, which is the only place the right level can actually be judged. ⭐ All 6 low-voltage step lights in the range dim; ⚠ 4 of 10 mains ones do too, so this is a strong tendency rather than a law.

⭐ The driver, sized for a bigger load

⭐ A 12/24 V DC constant-voltage driver, wired in parallel. ⭐⭐ AT 8 W EACH THESE ADD UP FASTER: six is 48 W, which already needs a 100 W driver to have sensible headroom. ⭐ A driver run at full load is the component that fails, and it fails years before the LEDs do. ⚠ Also check the voltage drop on a long run — at 24 V, cable resistance matters over distances that would be irrelevant at 240 V, and the far fitting going dim is the usual symptom.

⭐ CRI ≥90 and a 120° beam

⭐ Most exterior step lights run CRI 70 to 80. ⭐ At CRI ≥90 sandstone, brick and timber keep their colour — the materials a step light washes from close range and exactly what looks flat and grey under low-CRI light. ⭐ The 120° beam spreads output downward across about a metre of path from a 300 mm mounting, so on a run of steps one every second or third tread is usually enough. ⭐ Set 3000 K outdoors unless there is a reason not to.

✅ What is published

Where it works

• ⭐⭐ Wide treads and broad paths — ⭐ a band, not a pool.
• ⭐ Where you want to dim — ⭐ 495 lm is bright at close range.
• ⭐ Concrete stairs — ⭐ with the box cast in at the pour.
• ⛔ NOT on a mains circuit — ⭐ whatever the record says.
• ⚠ Not cored after the fact — ⭐ a 210 × 60 mm rectangle is hard.

Specifying it

Linear recessed LED step light, 226 mm. 12/24 V DC, 8 W. 421/462/495 lm at 3000/4000/5000 K switchable. CRI ≥90, 120° beam. IP65. Dimmable with a dimmable driver. Requires a 12/24 V DC constant-voltage driver, wired in parallel. Cutout 210 × 60 mm without the recessed box, 220 × 70 mm with. Depth 53.5 mm. 50,000 hrs. ⛔⛔⛔ ITS RECORD PUBLISHES 240 V AC ON A 12/24 V DC FITTING — one of 12 products confirmed by two independent signals. Connecting it to mains destroys it. ⭐ THE LINEAR FORMAT IS THE REAL REASON TO CHOOSE IT OVER THE 5 W ROUND UNIT: it washes a band across a tread where a round fitting throws a pool, and on a 1.2 m tread a pool leaves the edges dark — which is the part of a step people misjudge. ⚠ ITS 210 mm SLOT IS A MASONRY DECISION, longer than a brick is tall and crossing a mortar course.

Supplied and supported by Lights For You.

Download Datasheet (PDF)