The SK6820 FIRE ALARM CONTROL PANEL comes standard with one addressable loop supporting up to 318 points. Three additional SLCs may be added for a maximum pf 1110 addressable points. Up to 17 panels may be networked to provide convenient single-point communications. It comes with a built-in dual path IP and POTs communicator with additional cellular options for reliable backup. It may be programmed using Jumpstart™ auto programming, custom keypad programming or the Windows®-based HFSS via a convenient USB interface. The FACP is compatible with SWIFT® wireless detection as well as a variety of other devices including remote annunciators, printers, and NAC expanders. Adding the SK5815XL will add up to 127 SD addressable devices. The SK6820EVS adds Integrated Emergency Voice Communication. Up to 15 recordable one minutes messages can be mapped to eight different EVS buttons. It has four programmable buttons, 4x20 annunciator with 80 character display and large, easy-use keypad. Able to select EVS message as priority over fire.