Bus Enabled, used for Automation, to connect to any door window sensor, PIR , saves energy, supports 4 zones Security, Safety , and it is used for converting Classical Manual Switches into BUS use. Built-in intelligence and delay functions - Small in size, which can fit behind switch: Approximately Can be used in any location that require energy saving, intelligent control such as Convention Center, Hotel, Shopping Mall, Residential Building, Banquet Room, Stadium, Airport, Theme Park, Gymnasium, Intelligent Villa, Smart Mansion.