4路多线报警主机，每路可连接25个探测器，直观一对一状态显示，两路声光报警输出，一路火警、故障、监控报警输出
性能特点 ：
Four Style B (Class B) Initiating Device Circuits (IDCs).All zones accept two-wire smoke detectors and any normally-open contact devices.
One built-in, Style Y (Class B) Notification Appliance (Signal) Circuits (NACs).
Alarm, Trouble and Supervisory, Form-C relays standard.
24-volt operation.
Resettable four-wire smoke detector power @ 500 mA.
Non-resettable power @ 500 mA.
One-man walk-test programmable for silent or audible test.
Disable/Enable control per IDC.
Reverse polarity protection
