["Connects all phases of the house power network and makes the powerline signal available on all sockets in a circuit. Cross-connections to other circuits can be implemented via the fourth LX phase if electricity meters, FI circuit breakers and similar obstacles to powerline communication have to be overcome. **IMPORTANT: 3 phases + \"L/N\" . Increased range due to better coupling compared to the standard phase coupler. Multiple circuits can be connected with this adapter. FIs can be bridged with several ** ATTENTION: These devices may only be installed by a qualified electrician, otherwise there is a risk of fire or electric shock", "ALL16881PC AC 250/440V 50/60Hz", "Powerline devices on different phases and circuits can now communicate with each other", "Frequency range 1~70 MHz", "Mounting on DIN HUT rail", "Suitable for signal bridging via FI circuit breakers and electricity meters"]