nest Thermostat E Guide D'installation page 12

Optional in most homes
Use the included trim plate
if needed
If you don't want to paint over
holes or marks left by your
old thermostat, you can use
the optional trim plate.
Snap the thermostat base
and trim plate together, then
screw the plate to the wall.
If you have an electrical box
Electrical boxes aren't
common, but if you have
one, you'll need to purchase
a steel plate and screws
from nest.com/ca for
installation.
Secure the steel plate to
the electrical box with two
of the screws. Use the other
two screws to attach the
Nest base and trim plate.
Electrical box
Steel plate