# Configuration Notes - Utilizing Keycodes

Keycode Configuration Notes:

- When referring to the RTU, Z = 0.
- For any channels you have configured as Status Only, used code 1 Z for Message 1, and use code 2 Z for Message 2.
- DN is the Phone Number associated with a particular Destination.
- Actual power failure trip delay may be a fraction of a second longer than configured value, due to power supply discharge time which varies with the number of option boards.
- The speaker always operates during Front Panel programming, even if it is configured OFF.

Caution: If Alarm Reset Function is turned OFF, acknowledged alarms will never rearm, preventing further alarm calls after acknowledgment for each channel.