Norwegian to English Tech/Engineering Safety electric supply meters

Hvert målepunkt har mekanismer for å forhindre fysisk inntrengning.
...
Forsegling av målerkabinett **(vanligvis juridisk forsegling)**, terminaldeksel og en modulforsegling (nettselskapets forsegling).
For å åpne måleren må forseglingen brytes, dette kan sees på målepunktet.

I thought this was a simple little text about smart meters, but it is more technical than it looks at first sight.

Juridisk forsegling?
Is this some kind of registered and numbered sealing?

There are of course plenty of encrypted signals and alarms transmitted to the remote system too.

Thanks for any help!