User's Manual

TM0110 Page 3 of 22 Issue 1.00
CHAPTER 1
DESCRIPTION
1.1 GENERAL DESCRIPTION
Sirius II is a conventional fire alarm control panel designed to EN54 Parts 2 & 4. The Sirius II range
comprises 2, 4 and 8 zone versions. An 8 zone panel is shown in Figure 1.
The panel is housed in a metal enclosure and contains a main motherboard which is provided with a
DC supply from a power supply unit (PSU). The PSU is powered from AC mains and two 12 V, 7 Ah
lead acid batteries (wired in series) are used for the secondary supply source if the mains supply fails.
Each zone provided by the panel is monitored for faults. The panel provides two standard
conventional alarm circuits.
The display panel provides the visual indications and user controls.
Figure 1: 8 Zone Sirius II Fire Alarm Panel