Round 21 L, wall and ceiling luminaire.

* lighting technology 1:
- primary optical cover: micro prismatic cover,
  of PMMA, transparent,
- CAT 2 (L<= 3000cd/m²),
- UGR viewing direction along longitudinal
  luminaire axis ≤ 19
  (X = 4H | Y = 8H | S = 0.25H |
  reflection values 70/50/20),
- UGR viewing direction along lateral luminaire
  axis ≤ 19 (X = 4H | Y = 8H | S = 0.25H |
  reflection values 70/50/20),
- primary emission direction: below,
- primary beam angle: 85°,
- light emission: direct/indirect distribution,
- primary light characteristic: symmetric.

* mounting:
- installation arrangement: single arrangement,
- installation type: suspended mounting,
  surface-mounted,
- installation location: to the ceiling,
  to the wall.

* electrical 1: LED,
- rated luminous flux: 9.660lm,
- luminous efficacy: 116lm/W,
- light colour: 840,
- colour temperature: 4000K,
- colour rendering: CRI > 80,
- with terminal, 5-pole,
- mains connection: 230V, AC, 50/60Hz,
- rated input power: 83W.

* component:
- housing, of aluminium, coated, black.

- diameter: 850mm, height: 62mm,
- weight: 10,6 kg.

* testings/approvals/admissions:
- protection rating (complete): IP40,
- insulation class (complete):
  insulation class I (protective earthing),
- certification: CE,
- impact resistance: IK04,
- permissible operating ambient temperature:
  -10..+35°C.

- packaging unit: 1 piece.

  Round 21 L.

* type: 51MR38ND0421B.