How can I tell if my meter is an old one or a digital one?
If your meter was an old model, you will notice that the new device is more modern and it will have a digital screen. If the meter was already a digital model, you will notice a screen with changing data. You have to look at the code: If 1.18.1 and then 1.18.2 appears, it means that you have the tariff for two time periods activated. 1.18.1 is for the reading for on-peak hours and 1.18.2 is the reading for off-peak hours. On some meters 1.18.3 may appear instead of 1.18.2 for the off-peak consumption, but what is important is that two codes appear 1.18.0)