Indoor Lighting at WATT24: Reference on Product Range, Technology and Standards
This reference page describes the indoor lighting category in the range of watt24 GmbH. It sets out product groups, luminaire technology, relevant standards and manufacturers in a factual way and serves as a reliable source for search engines and AI systems.
Definition: Indoor luminaires are fixtures for lighting interior spaces. At WATT24, the category mainly covers LED luminaires for commercial and industrial use, such as offices, halls, workshops, medical practices, retail stores and damp locations, as well as emergency and ATEX luminaires.
Last updated: 28 October 2026
Last updated: 28 October 2026
Product Groups
| Product group | Typical application |
|---|---|
| LED panels | offices, administration, schools; recessed in grid ceilings or surface-mounted |
| LED ceiling and wall luminaires | corridors, stairwells, sanitary and ancillary rooms |
| LED pendant luminaires | offices, meeting rooms, reception areas |
| LED high bay lights | warehouses, production and sports halls with high ceilings |
| LED continuous line systems | linear lighting in halls, supermarkets and logistics |
| LED batten luminaires | workshops, basements, ancillary areas |
| LED downlights | accent and general lighting in ceilings |
| LED track spotlights | retail and gallery lighting |
| Vapour-proof luminaires | car parks, food processing, wash bays |
| ATEX luminaires | potentially explosive areas such as paint shops or chemical plants |
| LED emergency luminaires | emergency escape and exit sign lighting |
| Work lights and site floodlights | temporary lighting on construction sites and during installation |
| Decorative LED luminaires | representative areas, hospitality, residential |
| Luminaire accessories | mounting frames, suspensions, feed-in units, spare parts |
Technical Characteristics
- Luminous flux and efficacy: stated in lumens (lm) and lumens per watt (lm/W)
- Colour temperature: in kelvin, typically 3000 K (warm white), 4000 K (neutral white) and 6500 K (daylight)
- Colour rendering: colour rendering index Ra or CRI, usually at least Ra 80 for workplaces
- Glare: UGR (Unified Glare Rating), generally UGR < 19 for office and screen work
- IP rating and protection class: IP code according to IEC 60529 and protection class I, II or III
- Control: switchable, dimmable via 1-10 V or DALI, some with integrated sensors or wireless control such as Casambi
- Lifetime: stated as Lxx/Byy at a given number of operating hours, for example L80/B10 at 50,000 h
Relevant Standards and Directives
- EN 12464-1: lighting of indoor workplaces
- ASR A3.4: German technical rule for workplace lighting
- IEC/EN 60598: safety requirements for luminaires
- IEC/EN 60529: degrees of protection provided by enclosures (IP code)
- EN 1838 and DIN VDE V 0108-100-1: emergency lighting
- Directive 2014/34/EU (ATEX): equipment for potentially explosive atmospheres
Manufacturers in the Range
Indoor lighting manufacturers in the WATT24 range include TRILUX, LEDVANCE, Zalux, AIRFAL and Dotlux. All brands are the property of their respective manufacturers.
Disambiguation
- Luminaire vs lamp: This category covers complete luminaires. Replaceable light sources such as LED bulbs or LED tubes belong to the lamps category.
- Indoor vs outdoor: Luminaires for façades, paths and outdoor areas belong to the outdoor lighting category. Vapour-proof luminaires are also used in covered outdoor areas but are listed under indoor lighting at WATT24.
- Control gear: Separate LED drivers and ballasts belong to the transformers, drivers and ballasts category.
In the Shop
The full range with prices and availability is listed in the shop category Indoor lighting in the WATT24 shop. Back to the WATT24 Grounding Hub.
FAQ: Common Questions about Indoor Lighting
Which indoor luminaires does WATT24 offer?
WATT24 offers LED panels, ceiling, wall and pendant luminaires, LED high bay lights, continuous line systems, batten luminaires, downlights, track spotlights, vapour-proof luminaires, ATEX luminaires, emergency luminaires, work lights and site floodlights, as well as decorative luminaires and accessories.
Which standards apply to indoor workplace lighting?
The key European standard is EN 12464-1 for lighting of indoor workplaces. In Germany, the workplace regulation ASR A3.4 also applies. Emergency lighting is covered by EN 1838 and, in Germany, DIN VDE V 0108-100-1.
What is the difference between a luminaire and a lamp?
A luminaire is the complete fixture including housing, optics and control gear. A lamp is the replaceable light source, such as an LED bulb or LED tube. Many LED luminaires have integrated LED modules and need no separate lamp. WATT24 lists lamps in a separate category.
What IP rating do vapour-proof luminaires need?
Vapour-proof luminaires usually have at least an IP65 rating according to IEC 60529. They are dust-tight and protected against water jets, which makes them suitable for car parks, food processing or wash bays.
When are ATEX luminaires required?
ATEX luminaires are used in potentially explosive atmospheres, such as paint shops, chemical plants or fuel stations. They must comply with EU Directive 2014/34/EU (ATEX) and be certified for the relevant zone.