Use to extend the length of wire between 12 volt landscape lights and power supply for BlissLights and others that do not have a notched connection. Eliminate unsightly and unsafe extension cords by adding these low voltage wires to any 12 volt AC landscape lights. You can leave the transformer that came with the projector at the socket where it is plugged into the building and use any length or combination of lengths to reach the location where you want the projector to be located. Also one can replace the original transformer with a more powerful 120 watt light sensing transformer that we offer. It can operate multiple landscape lasers or LED lights. When you use the 120 watt light sensing transformer and add an extension cable with a splitter hub connector at end, from there you are able to add many projectors on to the end of a long run of the low voltage wire. This helps to reduce the number of wires running across your landscape.