The middle Nella, and the one most people actually want. Stepping from the 7W body to this one takes the housing from 75mm to 113mm and the output from around 550lm to roughly 1,100lm so one 12W fitting covers the ground that two 7W fittings would, and a room lit with fewer, larger discs usually reads calmer than the same room peppered with small ones.

Output, and the setting that peaks

Havit’s row for this model reads 995lm at 3000K, 1,125lm at 4000K and 1,050lm at 5500K. The brightest setting is 4000K, in the middle the coolest setting gives back about 7% of the light rather than adding any. The beam is 120, which is a genuine wide wash: at a 2.4m ceiling one fitting throws a pool roughly 8m across before it fades, so these want spacing rather than crowding. Colour rendering is CRI>80.

Sizing the driver

Both part numbers here are 12V DC and share one constant-voltage driver when they are wired in parallel. The arithmetic is worth doing before you buy: at 12W each, four fittings draw 48W and six draw 72W, so a 60W driver runs four comfortably and six needs a 100W unit. Leave headroom rather than sizing to the exact figure, keep the driver out of insulation so it can shed heat, and note Havit’s own instruction: do not connect the light fitting directly to 240V. The fitting is Protection Class 3, so no earth is landed at it.

Two body depths

The standard body is 113 75mm; the extension body is 113 142mm. Both are on this page and both are electrically and optically identical the extension is a proportion and clearance choice, not a performance one. The mounting plate is 103mm and fixes through three 4 10mm slots plus a single 4mm hole, which is a more forgiving pattern than the 7W model’s two fixed holes when you are working to an existing ceiling batten.

Rating, life and warranty

It is IP54 and IK07 behind a semi-frosted glass lens, rated >30,000hrs, and Havit specifies the 12V models as not dimmable dimming, if you need it, has to come from a driver built for it. The colour switch sits inside the fitting and ships preset to 3000K. Aluminium fittings are excluded by Havit from sites within 5km of salt water. Warranty is 3 years replacement. Lights For You keeps the 7W, 12W and 18W bodies in stock in both finishes, which makes it practical to mix sizes down a hallway without mixing families.

Questions

How many of these will light a room?

At 1,125lm on the brightest setting and a 120 beam, a 4 4m living space is usually four fittings and a 3 3m bedroom two. Spacing matters more than count with a beam this wide crowding them produces overlap rather than more useful light.

What size driver do I need?

Add the wattages. Each fitting is 12W, so four is 48W and six is 72W a 60W constant-voltage driver suits four and six wants a 100W unit. Size above the load rather than to it, and keep the driver clear of insulation.

Which colour temperature is brightest?

4000K, at 1,125lm. 3000K gives 995lm and 5500K gives 1,050lm so the coolest setting is not the brightest on this model.

What is the difference between the two options?

Body depth only: 113 75mm standard against 113 142mm with the extension. Same 12W engine, same output, same beam.

Can I dim it?

Not at the fitting Havit specifies the 12V DC models as non-dimmable. Dimming has to be handled by a driver designed for it.

Does it need an earth?

No. It runs at extra-low voltage and is Protection Class 3, so no earth is required at the fitting.

How is it fixed to the ceiling?

A 103mm base plate with three 4 10mm slots and one 4mm hole is fixed first, the fitting is plugged into its driver, then the body twists clockwise onto the plate.