Koster 724 is a classic bracket lantern: a straight tube reaches out from the wall and ends in a domed shade that hangs free and sends all of its light downward. The fitting has a 44 cm projection and stands 24 cm tall, so it lights the path or the doorstep rather than the wall it is mounted on.
Light that only goes down
Norlys states ULOR 0% for this luminaire — the share of flux directed above the horizontal is zero. In practice no ray escapes upward: it does not light the upstairs windows, does not put a glow over the plot, and does not count toward light pollution. The distribution is symmetrical and directed downward, with a luminaire efficiency of η = 48%.
Cast aluminium and a PC lens
The body is powder-painted cast aluminium in graphite RAL 7016. The lens is transparent polycarbonate with a structured surface, UV stabilised — the structure breaks up the image of the filament, and the UV stabilisation keeps the plastic from clouding and yellowing after years in the sun. A silicone gasket seals the fitting and the cable enters through an EPDM gland.
Resilience
Ingress protection IP54 covers dust and splashing water from any direction — rain and façade washing are not a problem. Mechanical resistance IK10 is the top class in the standard: the lens withstands a 20-joule impact, roughly a 5 kg object dropped from 40 cm. That matters at entrances, gates and passageways, where knocks are easy to come by.
Specification
- Manufacturer symbol: 724GR (Koster family; the aluminium variant is 724AL)
- Type: outdoor bracket wall light, 1 light point
- Socket: E27, light source replaceable by the end user
- Power: LED max 9 W (source not included)
- Voltage: ~220–240 V
- Projection: 44 cm; height: 24 cm; shade diameter: 24.5 cm; base diameter: 12 cm
- Net weight 2.74 kg, gross 3.61 kg; box 43.5 × 29 × 24 cm
- Material: powder-painted cast aluminium, structured polycarbonate lens (UV stabilised), silicone gasket, EPDM cable gland
- Colour: graphite RAL 7016
- Ingress protection: IP54; impact resistance: IK10
- Protection class: I (requires a protective earth conductor)
- ULOR: 0%; symmetrical, downward distribution; η = 48%
- Ambient temperature: rated +25 °C, operating range −20 °C…+45 °C
- Warranty: 5 years; anti-corrosion warranty: 25 years
Installation
The fitting mounts on three ø7 mm holes at the spacing of the supplied mounting box. The terminals accept up to 3 × 2.5 mm², and up to 3 × 1.5 mm² when looping fittings through (a row of lanterns along a driveway on one circuit). The gland takes a round cable of ø7–10.5 mm. Class I means the circuit must carry a protective earth — this is not a two-wire fitting.
Service and variants
The shade is available as a spare part (service kit 06710000), so breaking it years from now does not mean replacing the whole fitting. The model comes in two standard finishes: graphite RAL 7016 (724GR) and aluminium RAL 9006 (724AL); Norlys produces other colours to order from their own pattern book.
Where it works
Koster is a pattern that will not age with fashion — it suits a brick house as readily as a modern rendered façade. The bracket pushes the light away from the wall, so the fitting lights a front door, steps, a gate or a driveway well. The declared 25-year anti-corrosion warranty matches coastal and urban reality, where salt and exhaust eat cheaper castings within a few seasons.
About the manufacturer
Norlys AS is a Norwegian outdoor-lighting manufacturer from Oslo, specialising in fittings for a hard northern climate — hence the emphasis on aluminium castings, sealing and long anti-corrosion warranties.
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