The EDA-Z5008 Electro Detectors Wireless Fire Alarm System Panel can accomodate upto 240 wireless fire alarm devices across a maximum of 8 zones.  This means that the EDA-Z5008 Electro Detectors Zerio Plus Wireless Fire Alarm System offers the perfect solution for small to medium sized buildings.  The panel, although simple to use, offers sophisticated features more commonly seen in larger hardwired equivalents.