Spanish Phrase
Usa luces con sensor de movimiento.
Meaning
The sentence advises someone to install or operate lighting that is equipped with a motion detector. It suggests a practical, energy‑saving solution that turns the lights on only when someone is present.
When to use
You can use this phrase when giving home‑improvement tips, discussing energy‑saving measures, or recommending safety upgrades for homes, offices, or public spaces.
✦Grammar Breakdown
Usalucesconsensordemovimiento
Usa (imperative)
‘Usa’ is the informal second‑person singular imperative of the verb ‘usar’, meaning ‘use’ or ‘use it’.
luces (noun, plural)
‘luces’ is the plural form of ‘luz’, referring to light fixtures or bulbs.
con (preposition)
‘con’ means ‘with’ and links the noun ‘luces’ to the following complement.
sensor (noun)
‘sensor’ is a masculine noun meaning ‘sensor’; it does not need an article here because it is part of a compound noun.
de (preposition)
‘de’ introduces the type or purpose of the sensor – in this case, ‘movement’.
movimiento (noun)
‘movimiento’ means ‘movement’; together with ‘sensor’ it forms the phrase ‘sensor de movimiento’ (motion sensor).
🗨In Conversation
¿Cómo puedo reducir la factura de luz en casa?
How can I lower my electricity bill at home?
Usa luces con sensor de movimiento.
Use lights with a motion sensor.
✕Common Mistakes
Usa luz con sensor de movimiento.
‘Luz’ is singular; the sentence refers to multiple fixtures, so the plural ‘luces’ is needed.
Usa luces con sensores de movimiento.
While grammatically correct, the original phrase emphasizes a single type of sensor; using the plural can change the nuance.
Usa luces con el sensor de movimiento.
Adding the definite article ‘el’ makes it sound like a specific, already‑known sensor, which is not intended in a general recommendation.
↔Alternatives
Instala luces con sensor de movimiento.
Install lights with a motion sensor.
Pon luces con sensor de movimiento en los pasillos.
Put motion‑sensor lights in the hallways.
Equipa tu casa con luces que se activen con movimiento.
Equip your house with lights that activate with movement.
Cultural Tip
In many Spanish‑speaking countries, especially in urban apartments, motion‑sensor lighting is common in stairwells, bathrooms, and outdoor areas to improve safety and cut electricity costs. When speaking to older generations, you might prefer ‘instala’ or ‘coloca’ instead of the informal imperative ‘usa’. Also, note that in Latin America the ‘c’ in ‘sensor’ is often pronounced as /s/ rather than the Castilian /θ/.