ELECTRICAL ADAPTER

An electrical adapter for electrically connecting a control unit of a heating device to an electric energy source and to an electrical signal source. The adapter may include a support, an electrical signal line, a first electrical supply line, a second electrical supply line, and a filter device. The signal line and the supply lines may be embedded in a plastic material of the support. Ends of the signal line may merge into a signal input connection and into a signal output connection. Ends of the supply lines may merge into a first and second electrical supply input connection and into a first and second electrical supply output connection. The filter device may be configured to filter an electric supply current conducted via the supply lines. The filter device may include a first and second electrical filter connection via which the filter device is electrically connected to the supply lines.