OSRAM DULUX S 7W/840 4,000K G23 CFL — 400 lm

€19.90

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OSRAM DULUX S 7W/840 compact fluorescent lamp, single (2 tubes) tube, 7 W, 400 lm, cool white 4,000 K, CRI 82, G23 base (2-pin). Non-integrated (external ballast).

DULUX S7 W400 lmG234 000 K840

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The minimum purchase order quantity for the product is 2.

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This lamp can replace:

✅ GE Biax S 7W/840 G23 — Directly compatible
✅ PHILIPS MASTER PL-S 7W/840/2P G23 — Directly compatible
✅ RADIUM RX-S 7W/840 G23 — Directly compatible
✅ SYLVANIA LYNX-S 7W/840 G23 — Directly compatible
🔵 GE BIAX S 7W/840 — Compatible — difference noted
🔵 RADIUM RX-S 7W/840 — Compatible — difference noted
🔵 SYLVANIA LYNX-S 7W/840 — Compatible — difference noted

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You have 14 days after receipt to make a return, in accordance with your right of withdrawal.

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Expert advice Lighting specialist, Strasbourg

The OSRAM DULUX S 7W/840 compact fluorescent lamp (colour code 840) is a low-energy lamp with a single (2 tubes) tube and a G23 base. It emits cool white light at 4,000 K and about 400 lumens, with good colour rendering (CRI 82).

A non-integrated lamp (no built-in ballast), it fits G23 CFL luminaires and runs at 230 V through the fitting's ballast: 2-pin (magnetic ballast, integrated starter). Its long life (≈10,000 h) and low consumption make it an economical choice for commercial lighting.

Direct cross-references from other manufacturers: PHILIPS MASTER PL-S 7W/840/2P, GE Biax S 7W/840, SYLVANIA LYNX-S 7W/840. Same G23 base and same colour code 840: it replaces them without any change to the fitting.

Technical specifications

Brand	OSRAM
Type	Non-integrated compact fluorescent lamp
Configuration	DULUX S — single (2 tubes)
Power	7 W
Luminous flux	400 lm
Colour temperature	4 000 K (cool white)
Colour rendering (CRI)	> 82
Base	G23
Pins	2-pin (magnetic ballast, integrated starter)
Lifespan	≈10,000 h
Voltage	230 V
PHILIPS equivalent	PHILIPS MASTER PL-S 7W/840/2P
GE Lighting equivalent	GE Biax S 7W/840
SYLVANIA equivalent	SYLVANIA LYNX-S 7W/840
RADIUM equivalent	RADIUM RX-S 7W/840
Disposal	Contains mercury — WEEE recycling

Key benefits

✓G23 base — direct replacement in DULUX S luminaires

✓cool white 4,000 K light, CRI 82 — reliable colour rendering

✓2-pin (magnetic ballast, integrated starter)

✓Long life ≈10,000 h and low consumption

Ideal for

Offices and open spacesSchools and classroomsRetail and large storesDownlights and ceiling lightsCorridors and washrooms

Frequently asked questions

Is it compatible with my fitting?

Yes, if the fitting has a G23 base, the same wattage (7 W) and the right ballast. This is a non-integrated lamp: it needs the fitting's ballast and does not connect directly to the mains.

What is the PHILIPS, GE Lighting or SYLVANIA equivalent?

This lamp directly matches PHILIPS MASTER PL-S 7W/840/2P, GE Biax S 7W/840, SYLVANIA LYNX-S 7W/840. Identical G23 base, 7 W wattage and 840 colour code: a like-for-like replacement.

What is the difference between 2-pin and 4-pin?

The 2-pin version has a built-in starter and runs on a magnetic ballast. The 4-pin version runs on a high-frequency electronic ballast (fast start, flicker-free, often dimmable). Bases differ: match the one in your fitting.

What does the 840 code mean?

The first digit (8) indicates a CRI of 80 to 89; the next two give the colour temperature: 840 = 4,000 K (cool white).

How is it recycled?

Like all fluorescent tubes, it contains a small amount of mercury: take it to a WEEE collection point (recycling centre or store), never with household waste.

Why order from STRASSELEC?

✓Lighting specialist — expert advice and professional references
✓Fast shipping from Strasbourg (France and Europe)
✓Secure payment by card or bank transfer
✓14-day returns (right of withdrawal)

Need advice, a batch or a large quantity? The STRASSELEC team is here to help.

📦 Minimum order quantity: 2 pieces

Reference DULUX S 7W/840 OSRAM

Specific References

EAN13: 4050300010571

This lamp can replace:

✅ GE Biax S 7W/840 G23 Directly compatible — Même culot G23 et même code couleur 840 : le remplacement se fait sans aucune modification du luminaire.
✅ PHILIPS MASTER PL-S 7W/840/2P G23 Directly compatible — Même culot G23 et même code couleur 840 : le remplacement se fait sans aucune modification du luminaire.
✅ RADIUM RX-S 7W/840 G23 Directly compatible — Même culot G23 et même code couleur 840 : le remplacement se fait sans aucune modification du luminaire.
✅ SYLVANIA LYNX-S 7W/840 G23 Directly compatible — Même culot G23 et même code couleur 840 : le remplacement se fait sans aucune modification du luminaire.
🔵 GE BIAX S 7W/840 Compatible — difference noted
🔵 RADIUM RX-S 7W/840 Compatible — difference noted
🔵 SYLVANIA LYNX-S 7W/840 Compatible — difference noted