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Compact fluorescent single tube 4-pin base dimmable bulb

Ushio

Ushio CF9SE/827 9W 2700K 600lm 10000h CRI82 standard bulb

SKU CH-DKA1-ZVGGB

A 9 W compact fluorescent bulb delivering 600 lm of 2700 K light with 82 CRI and a 10 000-hour rated life

  • Power rating9
  • Light output600
  • Color temperature2700K
  • Lifespan (hours)10000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • Warm 2700 K light suits cosy living spaces
  • 600 lm brightness from only 9 W power draw
  • Dimmable electronic ballast operation allows adjustable lighting levels
  • 10 000 hour rated life reduces replacement frequency
  • CRI 82 renders colours accurately for everyday tasks

Warm White Fluorescent Bulb

The Ushio CF9SE/827 is a 9W compact fluorescent lamp designed for fixtures with electronic ballasts. It delivers a warm 2700K colour temperature suitable for residential and hospitality settings. The 4-pin base ensures compatibility with dimmable electronic control gear. Buyers needing a screw-in retrofit or instant full brightness without a ballast should look elsewhere.

Sustained Output Stability

The lamp maintains a steady 600 lumen output over its 10000 hour rated life when operated on a compatible electronic ballast. Colour rendering stays consistent at CRI 82 throughout the service period. Dimming performance depends on the paired ballast rather than the lamp itself. Frequent switching cycles may reduce the actual operating hours below the rated figure.

Replaces 9W CFL Equivalents

This bulb directly substitutes other 9W single-tube 4-pin compact fluorescents in existing electronic ballast fixtures. The upgrade is worthwhile when the current lamp has dimmed significantly or shifted colour after extended use. It does not replace integrated LED modules or mains-voltage halogen capsules. Installers must verify ballast compatibility before fitting.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 94% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameUshio
Product typeFluorescent Bulbs
Display
Light output600
Power
Power rating9
More details
Color temperature2700K
Lifespan (hours)10000
Color rendering82

Questions about this item

How much heat and power does the 9W fluorescent bulb generate when left on all day?

The lamp draws 9 watts and produces 600 lumens, so heat output stays low during continuous operation.

What fixture or ballast must I already have for the 4-pin base to work?

You need a compatible electronic ballast that accepts a single-tube 4-pin compact fluorescent lamp.

Will the 2700K colour temperature match the older incandescent bulbs I am keeping in the same room?

Yes, 2700K delivers a warm white appearance similar to traditional incandescent sources.

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