LG 32LN5700 El Manual Del Propietario página 40

The model and serial number of the TV is located
on the back and one side of the TV.
Record it below should you ever need service.
MODEL
SERIAL
This product qualifies for ENERGY STAR in the
"factory default (Home Use)" setting.
Changing the factory default settings or enabling
other features may increase power consumption
that could exceed the limits necessary to quality for
ENERGY STAR.