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