A network controller for facilitating roaming of a mobile wireless communications device between access points communicates with at least one access point over a wired network which, in turn, communicate with a mobile wireless communications device over a wireless network. Additionally, a plurality of electrodes may be provided on an outside surface of the transparent bulb. The installation consists of a tank with the oxidizing product, a fuel tank, a gas reserve, a mixer, a pump, a dosing device for the fuel with a flow meter and a regulating device of the gas flow, and, optionally, a tank with a stabilizer of the gas bubbles, a dosing pump and a flow meter. A retractor is mounted to one of the support arms at a proximal end.