Lumens, Kelvin, CRI and IP rating are the numbers buyers decide on. ETIM classifies them cleanly — but the values still have to be complete and the benefit still has to be written.
A downlight, a garden bollard and an LED panel look like three unrelated products until you read their datasheets — and then you notice they all live and die on the same handful of numbers. How many lumens does it put out? What colour temperature in Kelvin? What CRI? And, for anything near water or weather, what IP rating? In lighting, those numbers aren't fine print. They are the reason a buyer picks one lamp over the next.
Product data for luminaires and lighting is technical data that doubles as the sales argument: the light values decide the purchase. That is what makes this sub-segment of the electrical wholesale world distinct. In cabling or switchgear, specs are gatekeepers; in lighting, specs are the pitch. Get the light values right and complete, translate them into plain benefit language, and the product sells itself. Leave them empty and even a perfectly classified item goes nowhere.
Every luminaire carries a small set of values that buyers actively filter and compare on. When one is missing, the product drops out of the comparison entirely:
These values go missing for the usual reason: every supplier delivers them differently. One puts Kelvin in the title, one in a spec column, one only in a PDF datasheet, one not at all. Do this by hand across a full lighting range and the accessory longtail — bulbs, drivers, mounting kits — never gets finished.
ETIM is the connecting standard of the electrical and lighting trade, and for lighting it is genuinely strong: it defines the classes and the feature keys a luminaire should carry, so lumens, Kelvin and IP rating become comparable attributes across suppliers instead of free text. That structure is exactly what a filtered lighting shop needs. But it is important to be honest about where a classification ends:
| Data layer | What ETIM delivers | Where it stops |
|---|---|---|
| Classification | Clean luminaire classes, comparable across suppliers | Doesn't map a supplier's messy attribute names for you |
| Feature keys | Defines that lumens, Kelvin, CRI, IP should exist | Doesn't fill them in when the supplier left them empty |
| Light values | Standard units and structure for the numbers | Longtail and accessories often arrive with blank fields |
| Sales content | Not the job of a classification | No descriptions, no benefit copy, no SEO text |
| Images | Not covered | Photos, application shots, energy labels all missing |
In short: ETIM gives you the skeleton — the right fields in the right places — but a skeleton with empty Kelvin values and no descriptions still doesn't sell. The gap between an ETIM-classified feed and a shop-ready lighting listing is exactly the completeness and the copy.
The job is a three-step run, and lighting stresses the middle step hardest — because the specs are the content. That is exactly what Productbay is built for:
Productbay starts where ETIM ends: it takes the standard's clean structure and adds the two things a classification never carries — complete light values and the sales copy that turns them into an argument. For the full picture of the surrounding assortment, see the electrical wholesale overview, and for how the standards relate, the GDSN, ETIM & eCl@ss explainer. Productbay is built for specialist retailers running multi-supplier, multi-channel catalogs.
Lumens, Kelvin, CRI, IP rating — the values that sell a luminaire are exactly the ones that arrive incomplete. See how Productbay maps every supplier onto ETIM, completes the light values and turns them into sales copy in a 30-minute walkthrough.
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