A device using an unmetered supply generally has low consumption and uses a similar amount of energy each day. Its usage is easy to predict, so a meter isn't needed.
Unmetered supply device examples:
Streetlights
Sports ground flood lights
Public BBQs
Cable TV hubs
nbn® cabinets
Public telephones
Public sprinklers/irrigation
CCTV cameras
Parking sensors
These devices are set to “always on”. They connect directly to the energy network for ongoing, reliable power supply.