LG 55CT5WJ Owner's Manual page 36

This product qualifies for ENERGY
STAR®.
Changing the factory default
configuration and settings or
enabling certain optional features
and functionalities may increase
energy consumption beyond the
limits required for ENERGY STAR®
certification.
Refer to ENERGYSTAR.gov for
more information on the ENERGY
STAR® program.
The model and serial number of the product are
located on the back and on one side of the product.
Record them below in case you ever need service.
MODEL
SERIAL NO.
Temporary noise is normal when powering ON or OFF
this device.