The usage profile of a device is based on how long it requires power supply to run its function. Some unmetered devices like speed cameras, require 24-hour uninterrupted power supply. A bus shelter light on the other hand, would only require power from sunset to sunrise.
Typically, distributors split up energy profiles into 3 time blocks, day or night usage:
24 hours
12 hours (day or night)
Sunset to Sunrise
Should you need to change the profile of your unmetered device, get in touch with your distributor.