Phase Coupler / signal coupler for Powerline networks for installation in the fuse box (DIN rail). Highlights: ALL16881PC AC 250 / 440V 50 / 60Hz Powerline devices on different stages and circuits can now communicate with each Frequency Range 1 ~ 70 MHz Mounting on DIN top hat rail Suitable for signal bridging over GFCI and StromzählernVerbindet all phases of home electricity network with each other and makes the Powerline signal on all outlets in a circuit available. About the fourth LX-phase cross-connections can be implemented with other circuits, when electricity meter, GFCI and similar obstacles for the powerline communication must be overcome IMPORTANT:. 3 phases + & quot, L / N & quot,. Better coupling range increased compared to the standard phase coupler. Mehere circuits can be connected to this adapter. FI's can be bridged with multiple WARNING: This equipment should be installed only by a qualified electrician, Otherwise, a fire hazard or danger of electric shock.