Honeywell T8665C EnergyPro Owner's Manual page 10

Set the filter indicator (0,15, 30,60, 90, or
120 days) to remind you to change the
filter.
Information at the press of a button—use
the i (information) key to see the outdoor
temperature (C7089B Outdoor Temper­
ature Sensor optional accessory), the
current setpoints, or the filter status.
Daylight Time key for quick time changes
between Daylight and Standard time.
Backlit display for improved readability
(press any key to activate).
Optional outdoor temperature display—
ask your installer to install an outdoor
temperature sensor to activate this
feature.
For additional features, see the System
User's Guide provided by your Energy
Utility or systems provider.
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