Velux VSS C04 Solar Powered Skylight 550x980mm

The VELUX VSS C04 is a solar powered skylight for pitched roofs, sized 550 by 980mm. It suits bedrooms, studies and home offices, where a mid-size opening of daylight and quiet ventilation makes the room a more comfortable place to work and rest. The sash is powered by an integrated photovoltaic panel and operated with a wall-mounted RF remote, so there is no wiring, no electrician and no ongoing energy cost.

Key Features

• Integrated solar panel powers opening and closing with zero electricity cost
• Battery-backed control system keeps the window operating on overcast days
• Rain sensor closes the skylight automatically in wet weather
• Wall-mounted RF remote keypad with simple open, close and vent controls
• High-performance double glazing with NEAT self-cleaning coating
• White painted interior wood frame with grey aluminium external cappings
• Approximately 75% heat block for year-round comfort

Specifications

• Model: VELUX VSS C04
• Opening size: 550 x 980mm
• Type: solar powered opening roof window for pitched roofs
• Operation: wall-mounted RF remote keypad
• Power: integrated photovoltaic panel with battery-backed control system
• Glazing: high-performance double glazing with NEAT coating
• Rain sensor: automatic closure on detected precipitation

Applications

• Bedrooms and studies
• Home offices and small living areas
• Rooms where running wiring is not practical
• Rooms that need quiet, automatic ventilation

What You Need To Complete Your Skylight Installation

To finish the installation you need the matching flashing and, for light control, a blind. Add the VELUX C04 custom flashing for a weathertight seal, and pair the window with a VELUX skylight blind for blackout or filtered light. Browse the full solar skylight range, or see all VELUX skylights.

Frequently Asked Questions

Does this solar skylight need wiring?

No. The VSS C04 is powered entirely by its integrated solar panel, so there is no wiring and no electrician required for the opening mechanism. The battery-backed control system stores energy so the window keeps working on cloudy days, and the wall-mounted remote keypad runs without any connection to the mains.

What size is this skylight?

The VSS C04 has an opening size of 550 by 980mm, a slightly taller format than the C01. It suits bedrooms, studies and home offices, where a bit more vertical daylight makes the room feel larger while the roof opening stays compact.

Does it close automatically when it rains?

Yes. The VSS C04 has a built-in rain sensor that closes the skylight automatically when precipitation is detected. You can leave the window venting and the sensor will close it during a shower, then you can reopen it with the remote once the weather clears.

What happens on cloudy days?

The VSS C04 carries a battery-backed control system charged by the solar panel, so the window continues to open, close and vent through overcast periods. The system is designed for Australian conditions, where solar gain varies through the year.