Osram Dulux Star 20W E27 CFL Energy Saver

An Osram Dulux Star 20W E27 CFL energy saver bulb — a screw-in compact fluorescent for standard E27 lamp holders, giving significantly lower running cost than an equivalent incandescent bulb.

Do I need an electrician for this?

No — this is a standard E27 screw-in bulb. Switch off, unscrew the old bulb, and screw this one in. No rewiring involved.

Key Features

• Standard E27 screw base
• Compact fluorescent for lower running cost than incandescent
• Available in multiple colour temperatures

Technical Specifications

FAQ

• Will this fit my existing lamp?
  Yes, if your fitting takes a standard E27 screw-in bulb.
• Is this dimmable?
  Standard CFLs are generally not dimmable unless specifically marked as such — check your existing switch is a standard on/off type.
• How does a CFL compare to an LED bulb of similar output?
  A CFL uses more power than an equivalent-output LED and typically has a shorter rated life, but costs less upfront — useful when replacing an existing CFL fitting on a budget.
• Does this need a warm-up time?
  Yes, like most CFLs it reaches full brightness gradually over the first minute or so after switch-on, rather than instantly like an LED.