Common types include:
- Single socket extension leads: Extend a single power outlet to one additional socket.
- Multi-socket extension leads: Provide multiple sockets from one power outlet, often ranging from 2 to 8 sockets.
- Surge-protected extension leads: Protect connected devices from power surges.
- Retractable extension leads: Have a reel for easy storage and length adjustment.
- USB extension leads: Include USB ports for charging devices.