A method of configuring a selected component (1a - 1i) of a commercial, residential, and/or industrial building, the commercial, residential, and/or industrial building comprising one or more components (1a - 1i) to be configured, the one or more components (1a - 1i) to be configured being selected to be from the groups of flow control components, sensor components or input control components, each of the one or more components (1a - 1i) to be configured having a component controller storing a unique address of the component (1a - 1i) and having an electronic transmitter and an electronic receiver, the component controller being in operative communication with a system unit via the electronic transmitter and via the electronic receiver, the commercial, residential, and/or industrial building further comprising three or more ultra-wideband transceivers (3a - 3d) having known physical locations, the method comprising the steps of: providing the system unit with a configuration list having for each component (1a - 1i) to be configured a first pair of data, the first pair of data comprising physical location data and a system location identity; selecting a component (1a - 1i) from among the one or more components (1a - 1i) to be configured; the system unit transmitting an identification request signal to the selected component (1a - 1i); in response to the identification request signal, the selected component (1a - 1i) using its component controller to transmit via its electronic transmitter its unique address to the system unit; each ultra-wideband transceiver (3a - 3d) of the three or more ultra-wideband transceivers (3a - 3d) transmitting an ultra-wideband radio frequency pulse to the selected component (1a - 1i); the component controller of the selected component (1a - 1i) registering a time of arrival for each transmitted ultra-wideband radio frequency pulse; producing component location data by locating the selected component (1a - 1i) based on the known physical locations and based on the registered times of arrival; determining a system location identity of the selected component (1a - 1i) by matching the component location data with the physical location data of the configuration list; characterised in that the system unit producing a second pair of data, the second pair of data comprising an address resolution pair of data, the address resolution pair of data comprising the unique address of the selected component (1a - 1i) and the determined system location identity; and the system unit recognising the selected component (1a - 1i) by the determined system location identity of the second pair of data. providing the system unit with a configuration list having for each component (1a - 1i) to be configured a first pair of data, the first pair of data comprising physical location data and a system location identity; selecting a component (1a - 1i) from among the one or more components (1a - 1i) to be configured; the system unit transmitting an identification request signal to the selected component (1a - 1i); in response to the identification request signal, the selected component (1a - 1i) using its component controller to transmit via its electronic transmitter its unique address to the system unit; each ultra-wideband transceiver (3a - 3d) of the three or more ultra-wideband transceivers (3a - 3d) transmitting an ultra-wideband radio frequency pulse to the selected component (1a - 1i); the component controller of the selected component (1a - 1i) registering a time of arrival for each transmitted ultra-wideband radio frequency pulse; producing component location data by locating the selected component (1a - 1i) based on the known physical locations and based on the registered times of arrival; determining a system location identity of the selected component (1a - 1i) by matching the component location data with the physical location data of the configuration list; characterised in that the system unit producing a second pair of data, the second pair of data comprising an address resolution pair of data, the address resolution pair of data comprising the unique address of the selected component (1a - 1i) and the determined system location identity; and the system unit recognising the selected component (1a - 1i) by the determined system location identity of the second pair of data.