Hi Pavlo,
If you are looking to install just Aranet4 without the Base Station, then consider placing 1 device in all places you would like to measure within the space. For example, perhaps a device in all the individual offices and the meeting rooms, and 1 device in common areas. But it all depends on where in that space you would like to measure. If you have more questions, please write to sales_support@saftehnika.com