That means your
existing thermostat will be replaced and Nest will be installed - whether on the
wall or, as we opted for, via a plug
socket and mounted on the Nest Stand (which is sold separately for an extra # 29).
These plug into your
sockets and «carry» your internet connection through your wiring, bringing it to parts of the house your
existing wifi signal might not reach due to beams or thick stone
walls.