Features: *Standard cabinet design (2U). * Built-in 10 zone selector and paging selector, which can be expanded to 300 zones.Each zone power capacity is 500W, and the total ten zones capacity is 5000W. * With memory function when power off, it can realize the restoration after electricity is turn on. * Two-color zones status indicators accurately indicate music, paging or alarm status. *Music zone play control function to realize music playback in any zone. *Local and ultra remote (1km) zone paging function。* 3 levels of input priority from high to low: EMC input, Mic1, remote paging console (equivalent priority with built-in chime). *Built in 4-scale bell tone.