Danish Sirius provides a Christmas tree light chain that simply needs to "fall" on top of the tree before it lies flat. includes a 1.5 m cable with a transformer and socket plug on it. With Top-Line light chains, you may obtain stunning warm white Christmas lighting. Slowly and erratically, the light flashes from one diode to the next. It is called "Slow Flash" for this reason. In this instance, a "ring" from which 9 light chains dangle down is called a "Tree drop down" light chain.