Round 21 S, wall and ceiling luminaire.

* lighting technology 1:
- primary optical cover: cover, of PMMA, opal,
- 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: 105°,
- light emission: direct distribution,
- primary light characteristic: symmetric.

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

* electrical 1: LED,
- rated luminous flux: 3.420lm,
- luminous efficacy: 113lm/W,
- light colour: 830,
- colour temperature: 3000K,
- colour rendering: CRI > 80,
- with terminal, 5-pole,
- mains connection: 230V, AC, 50/60Hz,
- rated input power: 30W.

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

- diameter: 400mm, height: 62mm,
- weight: 3,1 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 S.

* type: 51MR34FD0321B.