The Domus DRIVER-12V-IP67-DIM is an outdoor Triac-dimmable 12V DC constant-voltageLED driver IP67, in 30, 60, 100, 150 and 200W,complete with 1m flex and plug.

A five-year warranty, and it is in no product field

• The datasheet prose states a 5-year replacement warranty. No warranty isrecorded on the listing.
• Five years is the longest term met anywhere in this catalogue, where most Domusproducts carry one or three. On a driver that is worth knowing, because the driver isusually what fails first in a garden lighting installation the fittings outlive it.
• It also changes the buying decision. A cheaper driver with a shorter term on aburied or hard-to-reach garden run is a false economy: the labour to reach it dwarfs the part.
• Ask us to confirm it in writing with your order, since it is prose rather than arecorded term.

What IP67 gives you on a driver

• IP67 is dust-tight and rated for temporary immersion genuinely aburied-in-a-garden-bed rating, not just a rain rating.
• Which is what the product is for: the datasheet names LED strip, ingrounduplighters and garden spike lighting.
• Temporary immersion is not permanent immersion. A driver sitting in a spot thatholds water after every storm will fail eventually. Mount it above the water line or in a drainedenclosure, even at IP67.
• Compare with the IP20 version in this catalogue, which is the indoor equivalent atthe same 12V output if the driver is going in a cupboard or a ceiling void, the IP20 is thecheaper correct answer.

Protection features, all in prose and none in a field

• Secondary-side short-circuit protection a fault in the low-voltage wiringshuts the driver down rather than damaging it. On a garden run where a cable can be cut by a spade,this is the feature that saves the driver.
• Thermal overload and over-temperature protection.
• Over-voltage protection.
• Efficiency up to 89%, power factor >0.95.
• Working range 30C to +45C, humidity 595% RH.

Wire in parallel, and size it properly

• Parallel wiring, as the datasheet specifies not series.
• Size the driver to the total load with headroom. Running a driver at its ratedmaximum shortens its life; 20% spare is the usual allowance.
• Our record lists 30W, which is only the smallest of the five variants. Therange is 30 / 60 / 100 / 150 / 200W and you choose it from the dropdown.
• Volt drop matters at 12V far more than at 240V. A long garden run onundersized cable dims the fittings at the far end. Tell us the run length and the number offittings and we will size the driver and the cable together.

Dimming: Triac

• Triac dimmable, on the mains side so a standard mains dimmer controls thedriver, which controls the LEDs.
• Fully dimmable with suitable dimmers is the datasheet’s own qualifier. Triac dimming of a constant-voltage driver is the arrangement most likely to flicker ifthe dimmer and driver are mismatched, particularly at low levels and light loads.
• Tell us the dimmer and the total load and we will confirm the combination before youbuy.
• The non-dimmable IP20 and IP67 versions exist if dimming is not needed fewer things to go wrong.

Our record calls this an indoor product

application: Indoor, on an IP67 driver made for garden beds. Across the Domus catalogue that field holds Indoor on 340 of 342 recordsand carries no information. Read the IP67.

Where it works

• Garden lighting spike lights, inground uplighters, exterior strip.
• Buried or ground-level enclosures, at IP67.
• Exposed positions down to 30C.
• Not in standing water IP67 covers temporary immersion, not permanent.
• Not indoors where the cheaper IP20 version would do.

Specifying it

Outdoor Triac-dimmable 12V DC constant-voltage LED driver. IP67. 30 / 60 / 100 / 150 /200W. Efficiency up to 89%, PF >0.95. Secondary-side short-circuit, thermal overload,over-temperature and over-voltage protection. 1m flex and plug. Parallel wiring. Working range30C to +45C, 595% RH. 240V AC input. The datasheet prose states a 5-year replacement warranty the longest in this catalogue and it is in no product field; ask us to confirm it with your order. Our record lists 30W,the smallest of five variants, and calls this an indoor product.

Supplied and supported by Lights For You.

Questions

What is the warranty?

Five years, stated in the datasheet prose as a replacement warranty and it is in no product field, which is why it is worth calling out. Five years is the longest term met anywhere in this Domus catalogue, where most products carry one or three. On a driver that matters more than it sounds: the driver is usually what fails first in a garden lighting installation, and the fittings outlive it. Ask us to confirm it in writing with your order, since it is prose rather than a recorded term.

Which wattage do I need?

Add up the load of everything on the run and allow about 20% headroom running a driver at its rated maximum shortens its life. The range is 30, 60, 100, 150 and 200W, chosen from the dropdown; note our record lists only 30W, which is just the smallest variant. Tell us the fittings and how many and we will size it with you, and we will look at the cable at the same time: at 12V, volt drop on a long garden run dims the fittings at the far end, and that is a cable problem rather than a driver one.

Can I bury it in a garden bed?

IP67 is dust-tight and rated for temporary immersion, so it is genuinely a garden-bed rating rather than just a rain rating that is what the product is for. But temporary immersion is not permanent: a driver sitting where water stands after every storm will fail eventually. Mount it above the water line or in a drained enclosure even at IP67, and it will last the five years its warranty implies.

Will it work with my dimmer?

It is Triac dimmable on the mains side, with the datasheet’s own qualifier “fully dimmable with suitable dimmers”. Be careful here: Triac dimming of a constant-voltage driver is the arrangement most likely to flicker when the dimmer and driver are mismatched, especially at low levels and light loads. Tell us which dimmer you have and the total load and we will confirm the combination before you buy. If you do not need dimming, the non-dimmable version has fewer things to go wrong.

How do I wire the fittings to it?

In parallel, as the datasheet specifies not in series. Each fitting connects across the same 12V output rather than one after another. Wiring low-voltage fittings in series is a common and expensive mistake: the voltage divides between them and nothing runs properly. If you are running several zones or a long line, tell us the layout and we will draw it with you.

What protection does it have?

Four things, all stated in the datasheet prose and none of them in a product field: secondary-side short-circuit protection, thermal overload protection, over-temperature protection and over-voltage protection. The short-circuit protection is the one that earns its keep in a garden a low-voltage cable cut by a spade shuts the driver down instead of damaging it.

Should I use this or the IP20 version?

Position decides it. IP67 is for outdoors, garden beds and anywhere exposed; the IP20 version is the indoor equivalent at the same 12V output and is the cheaper correct answer if the driver is going in a cupboard, a ceiling void or a switchboard. Paying for IP67 to sit in a dry cupboard is protection you are not using.