ONB is an optional device of OS-NET solution. It is designed to replace the existing wall switch and provide manual control(on/off/dim) to the lighting of the assigned group by broadcasting the wireless commands to the ONS and ONC of the group, while also function as a node. This OS-NET device can be mounted into a standard NEMA or EURO type wall box, operated by ling voltage power, and provide wireless control to the grouped lighting as required.