Spanish Phrase
Instala un sistema de alarma.
Meaning
This is an informal command telling someone to set up an alarm system, typically for a home, office, or business. It conveys a clear, actionable instruction.
When to use
Use this phrase when you are speaking to a friend, a technician, or anyone you address with the informal 'tú' and you want them to install a security alarm. It’s common in casual conversations about home improvement or safety.
✦Grammar Breakdown
Instalaunsistemadealarma
Imperative (tú) of 'instalar'
To give a direct command to someone you address informally, drop the -r from the infinitive and add -a: instalar → instala.
Indefinite article 'un'
Use 'un' for masculine singular nouns; 'sistema' is masculine, so the correct article is 'un'.
Preposition 'de'
Links two nouns to show relationship, here 'sistema de alarma' = 'alarm system'.
Gender of 'alarma'
'Alarma' is a feminine noun, but it follows the masculine 'sistema', so the article does not change.
🗨In Conversation
Instala un sistema de alarma.
Install an alarm system.
Claro, lo haré mañana.
Sure, I'll do it tomorrow.
✕Common Mistakes
Instalar un sistema de alarma.
Missing the imperative ending; you need the command form 'Instala'.
Instala una sistema de alarma.
‘Sistema’ is masculine, so the correct article is 'un'.
Instala un sistema de el alarma.
‘Alarma’ is feminine; the correct article is 'la' when used alone.
↔Alternatives
Coloca un sistema de alarma.
Place an alarm system.
Pon un sistema de alarma.
Put an alarm system.
Instala un sistema de seguridad.
Install a security system.
Cultural Tip
In many Spanish‑speaking countries, installing a burglar alarm is a common step for home security, especially in urban areas. If you need to be more formal (e.g., speaking to a client), use the usted command: 'Instale un sistema de alarma.' Also, remember that while 'alarma' is feminine, the phrase 'sistema de alarma' keeps the masculine article because it modifies 'sistema.'