Standard Features Up to six intelligent analog loops hosting as many as 1,500 Signature Series devices per panel Optional integrated eight-channel digital audio 10 amp power supply with universal 94 to 264 Vac input voltage Patented Voltage Boost technology delivers consistent volt age even at low battery power Four built-in 3-amp notification/auxiliary circuits Large 24-line by 40-character backlit LCD Simplified operation with the SpeedTouchâ?¢ rotary control 65 amp hour battery charger 64-node network nodes using copper and/or fiber Supports up to 30 R-Series remote annunciators Removable terminals on all low voltage wiring Space for up to three additional option cards such as extra SLC loops, amplifiers, or dialer/modem Optional Ethernet interface 1,100 event history log Optional earthquake hardening: OSHPD seismic pre-approval for component Importance Factor 1.5 UL2572 Listed for Mass Notification UL864 UUKL Listed for Smoke Control UL864 Listed for releasing applications using SIGA-REL