A router stores core file into a local flash memory after detecting a shutdown event. The method consists of defining a number of templates in the format of the database, these templates containing executable statements. The control line has an outer housing that encapsulates a polymeric secondary housing. A preferred composition includes a blend of polystyrenepolyphenylene ether, linear low density polyethylene, and styrene-ethylene-butadiene-styrene. The controllers extinguish their lights a predetermined time after the person passes or no one enters a space. Each multilayer panel includes at least the following three layers: a first metal foil layer metal foil, a second intermediate layer of fiber-glass securely fixed to the first layer, and a third metal honeycomb layer securely fixed to the second layer.