They include transformer, 8 function memory controller and memory hold function, remembering your flashing sequence even when powered off. Related posts: After putting up icicle lights at the parents, quite a few of the strings had half or full sections with no light.
They remain cool to the touch when lit and withstand wind and rain.
These super bright white LED Icicle lights can be safely used indoor and outdoor.
White LED Icicle Lights with 8 Functions & Memory (Clear Cable)