Radio base is the device that provides a stable connection between blasters, devices and control unit. It has a range of about 12 meters (40 feet) in ideal conditions. So the coverage of one radio base is about 400 square meters or 5,000 square feet. But all constructions reduce this coverage. That’s why we recommend game designers install them on a ceiling and have overlapping radio base coverages or have several bases in reserve.
Here is a full description of Radio Base.