The Module has two wires going in (positive & negative) and two wires going out to carry the voltage onto the next module. If there is no module to follow in line, simply remove the wires as close to the body of the module as possible and seal with a small blob of paint or silicone.

They were originally designed for sign lighting but there sturdy design makes them suitable for use indoors or outdoors, they are compact, easy to use and use very little power.