... 3.General Alarm ModeThere are three options for Gen. Alarm Mode: -x Common Alarm - All NAC outputs activate from any fire input regardless of which zone they are in.x Zoned Alarm – NAC ... characters max. 14 FireNET 4127 I & O Manual v1.86 UL 1.3 Limitations of Fire Alarm Systems Follow Recommended Installation Guidelines: To achieve early fire detection, fire detection sensors ... line. If detectors are not so located, a fire within the room could prevent the alarm control from reporting a fire. x Notification Systems: All fire alarm systems require notification devices,...