Eight Style B (Class B) Initiating Device Circuits (IDCs).
All zones accept two-wire smoke detectors and any normally-open contact devices.
Two 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.