J.P. Instruments EDM 900 Pilots Guide - Manual (Page 8)

Page 8 Engine Data Management
Vertical Display Mode
Remote Annunciate Light Basics
The Remote Annunciator Light ‘RAL’
provides notification that an alarm is present
in the display, for all Primary gauges. Upon
power up, the RAL shows Red and yellow
indicating it is functional. Before each flight,
confirm that it is functional. Non-functioning
RAL must be repaired before flight.
Remote
Annunciator Light
(RAL)