מתקן האחסון משתמש בקוד כניסה לאחסנה עצמית.

Hebrew often expresses X of Y with a construct chain (סמיכות), not with של.

So:

• מתקן האחסון = literally the facility of the storage
• natural English: the storage facility

A key rule is that in a construct chain, the first noun usually does not take ה־. The definiteness is shown on the second noun:

• מתקן אחסון = a storage facility
• מתקן האחסון = the storage facility

So even though מתקן has no ה־, the whole phrase is definite because האחסון is definite.

משתמש is the masculine singular present-tense form of the verb להשתמש (to use).

It agrees with מתקן, which is a masculine singular noun.

In Hebrew, the present tense often covers both:

• uses
• is using

So מתקן האחסון משתמש... can mean either:

• the storage facility uses...
• the storage facility is using...

Context usually decides which English version sounds best.

Because the verb להשתמש normally takes the preposition ב־.

So Hebrew says, literally:

• להשתמש ב... = to use / to make use of ...

Examples:

• אני משתמש בעט = I use a pen
• היא משתמשת בטלפון = She uses the phone
• משתמש בקוד = uses a code

So בקוד is exactly what you should expect after משתמש.

Yes, it is written as one word because Hebrew attaches short prepositions like ב־ directly to the following word.

So:

• ב + קוד → בקוד

One important point: in unpointed Hebrew spelling, בקוד can represent either:

• בְּקוֹד = with/in a code
• בַּקוֹד = with/in the code

So the written form can be ambiguous.

In this sentence, context makes it sound like using an access code or using the access code, depending on the broader situation. Hebrew often leaves that to context.

קוד כניסה is another noun-noun combination, basically a short construct-style phrase:

• קוד = code
• כניסה = entry / entrance / access

Together:

• קוד כניסה = entry code / access code

This is very common in Hebrew: one noun modifies another without needing a separate word like of.

Compare:

• כרטיס אשראי = credit card
• בית ספר = school
• קוד כניסה = access code

If you wanted to make it clearly definite, you would often see:

• קוד הכניסה = the access code

Here ל־ means something like for or for the purpose of, not just to.

So:

• לאחסנה עצמית = for self-storage

That is a very common use of ל־ in Hebrew. It can mark purpose, destination, or intended use.

For example:

• חדר לפגישות = a room for meetings
• מקום לחניה = a place for parking
• קוד כניסה לאחסנה עצמית = an access code for self-storage

Because עצמית is agreeing with אחסנה, which is a feminine noun.

So:

• אחסנה = feminine
• therefore the adjective must also be feminine: עצמית

If the noun were masculine, you would use עצמי instead.

For example:

• אחסנה עצמית = self-storage
• אחסון עצמי = self-storage

Both patterns can exist, depending on which noun is being used.

They are very close in meaning. Both relate to storage.

Roughly:

• אחסון = storage
• אחסנה = storage / storing / warehousing

In many contexts they overlap a lot. Sometimes speakers feel:

• אחסון sounds a bit more general or everyday
• אחסנה can sound a bit more formal, technical, or commercial

In this sentence, both appear:

• מתקן האחסון
• לאחסנה עצמית

That is understandable, but some learners may notice it feels slightly repetitive or stylistically uneven. Still, grammatically it works.

Yes. מתקן can mean several related things, depending on context:

• facility
• installation
• device
• apparatus

So by itself, מתקן is not always a building or site.

In this sentence, because it is followed by האחסון, the meaning is clearly something like:

• storage facility
• storage installation

Context is what tells you which English word fits best.

A simple pronunciation guide is:

mitkan ha-ikhsun mishtamesh be-kod knisa le-akhsana atzmit

Approximate stress:

• mitKAN
• ha-ikhSUN
• mishtaMESH
• beKOD
• kniSA
• le-akhsaNA
• atzMIT

A more word-by-word breakdown:

• מתקן — mitkan
• האחסון — ha-ikhsun
• משתמש — mishtamesh
• בקוד — be-kod
• כניסה — knisa
• לאחסנה — le-akhsana
• עצמית — atzmit

Yes. This is a normal, straightforward Hebrew sentence pattern:

• subject: מתקן האחסון
• verb: משתמש
• prepositional phrase / complement: בקוד כניסה לאחסנה עצמית

So the structure is basically:

• The storage facility
  • uses
    • an access code for self-storage

Hebrew word order is somewhat flexible, but this version is neutral and standard.