As an AI language model I don't have specific information about the building infrastructure. However, emergency lighting used in duplex villas may include:
1. Exit signs: These are usually placed above doors or hallways that lead to an exit. They are designed to help people find their way out of a building in case of an emergency.
2. Emergency lighting: This is lighting that is designed to provide enough illumination in case of power failure or other emergencies. In most cases, emergency lighting is battery powered.
3. Stairwell lighting: Stairwell lighting may also be included in the emergency lighting system. This is meant to help people find their way down the stairs in case of power failure.
4. Backup power: In addition to emergency lighting, duplex villas may have backup power in case of power failure. This may include generators or batteries.
5. Motion sensor lighting: Some duplex villas may have motion sensor lighting installed. This is lighting that turns on when motion is detected. It can be helpful in case of emergency, as it will provide illumination when people are moving around the building.
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