Jo bedre adgangskontrollen fungerer, jo tryggere er minilageret.

It is a very common comparative pattern meaning the ... the ..., as in:

• The better the access control works, the safer the storage unit is.

So:

• Jo bedre ...
• jo tryggere ...

means the better ..., the safer ...

This structure is used when one thing changes together with another.

Examples:

• Jo mer du øver, jo flinkere blir du. = The more you practise, the better you get.
• Jo tidligere vi drar, jo bedre. = The earlier we leave, the better.

They are both comparative forms.

• god → bedre = good → better
• trygg → tryggere = safe/secure → safer/more secure

The jo ... jo ... construction normally uses comparatives, because it compares degrees:

• the better
• the safer

So this sentence is not saying something is simply good or safe. It is saying that a higher degree of one thing leads to a higher degree of another.

Because adgangskontrollen is the definite form: the access control.

Breakdown:

• adgangskontroll = access control
• adgangskontrollen = the access control

In Norwegian, the definite article is often added as an ending on the noun instead of using a separate word like the in English.

So:

• en adgangskontroll = an access control system
• adgangskontrollen = the access control system

Here, the sentence is talking about a specific access control system, so the definite form is natural.

For the same reason: minilageret means the self-storage unit / the mini-warehouse / the storage facility, depending on context.

Breakdown:

• et minilager = a storage unit / a self-storage facility
• minilageret = the storage unit / the self-storage facility

The sentence refers to a specific one, so Norwegian uses the definite form.

Yes. Norwegian very often forms compound nouns as one word, where English might use two or more words.

So:

• adgang = access
• kontroll = control
• adgangskontroll = access control

This is completely normal in Norwegian. English speakers often want to separate these words, but Norwegian usually joins them.

Other examples:

• bilnøkkel = car key
• dørhåndtak = door handle
• sikkerhetssystem = security system

Because Norwegian follows the verb-second (V2) rule in main clauses.

In the second part, jo tryggere comes first. When something other than the subject comes first, the verb usually comes before the subject:

• Jo tryggere er minilageret

not

• Jo tryggere minilageret er

So the order is:

1. fronted element: Jo tryggere
2. verb: er
3. subject: minilageret

This word order is very typical in Norwegian main clauses.

Because the two clauses are behaving differently syntactically.

In the first clause:

• Jo bedre adgangskontrollen fungerer the subject adgangskontrollen comes before the verb fungerer.

In the second clause:

• jo tryggere er minilageret the comparative phrase jo tryggere is fronted, and then the main-clause V2 rule puts the verb er before the subject minilageret.

This kind of asymmetry is normal in Norwegian jo ... jo ... sentences. Learners often notice it because English keeps a more consistent order:

• The better the access control works, the safer the storage unit is.

Fungerer means works or functions.

Base form:

• å fungere = to function / to work

So:

• adgangskontrollen fungerer = the access control works / is functioning

In this sentence, it means the system is operating effectively or properly.

Yes, in many cases you can.

A common variant is:

• Jo bedre adgangskontrollen fungerer, desto tryggere er minilageret.

This also means the better ..., the safer ...

In modern Norwegian, jo ... jo ... is very common and natural. Jo ... desto ... is also correct, and some speakers feel it sounds a bit more formal or stylistically marked.

Here trygg means safe, secure, or protected.

It can describe:

• a person feeling safe
• a place being secure
• a situation being safe

In this sentence, it means the storage unit or facility is more secure because the access control works better.

So tryggere here is close to:

• safer
• more secure

Yes. The exact translation depends on context.

Minilager can refer to:

• a single storage unit
• a self-storage facility/business
• rented storage space in general

So in this sentence, it could mean:

• the storage unit
• the self-storage facility

The wider context would tell you which is intended.

Yes, the comma is standard here:

• Jo bedre adgangskontrollen fungerer, jo tryggere er minilageret.

The comma separates the two linked comparative parts of the sentence. When you have a jo ... jo ... construction like this, writing a comma is normal and expected.

Yes. The jo ... jo ... pattern is very flexible.

With adjectives:

• Jo tryggere, jo bedre. = The safer, the better.

With adverbs:

• Jo raskere du kjører, jo tidligere kommer du fram. = The faster you drive, the earlier you arrive.

With quantities:

• Jo mer penger du sparer, jo bedre. = The more money you save, the better.

So the important thing is not the word class by itself, but the idea of a comparison in degree.

A very useful pattern is:

• Jo + comparative + clause, jo + comparative + verb + subject

For example:

• Jo mer du leser, jo mer lærer du.
• Jo eldre han blir, jo roligere blir han.
• Jo bedre planen er, jo lettere blir arbeidet.

In your sentence:

• Jo bedre adgangskontrollen fungerer
• jo tryggere er minilageret

So if you want to build your own, think:

1. What increases or improves?
2. What changes as a result?
3. Put both parts in the comparative.