The DE version is technically identical and can be used in Switzerland without an adapter, as the 2-pin power cable supplied fits in both Germany and Switzerland. A special adapter is therefore not required.

The Gigaset Box 100 (DE version) is designed for the analogue telephone connection and supports the GAP standard, which basically enables compatibility with analogue telephones such as the Gigaset SL800H. However, unrestricted operation outside Germany is not guaranteed, which is why 100% compatibility with the SL800H cannot be guaranteed. For binding confirmation, we recommend checking the official Gigaset compatibility lists or contacting customer service.

Summarised:
- No adapter required for the power supply in Switzerland.
- Analogue telephony is supported, compatible with GAP-capable devices.
- Compatibility with Gigaset SL800H is likely, but not officially guaranteed.

If you are unsure, please contact Gigaset support.