Dell 210-AVMG User Manual page 20

NOTE: This monitor is ENERGY STAR certified.
This product qualifies for ENERGY STAR in the factory default settings which can
be restored by "Factory Reset" function in the OSD menu. Changing the factory
default settings or enabling other features may increase power consumption that
could exceed the ENERGY STAR specified limit.
NOTE:
P : Power consumption of On Mode as defined in Energy Star 8.0 version.
ON
TEC: Total energy consumption in KWh as defined in Energy Star 8.0
version.
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20 About your monitor