PIR sensor
[P-I-R /ˈpiːaɪˈɑːr/ ˈsɛnsər]
nounmasculinepl: PIR sensors / sensores PIR
sensor PIR / sensor de movimento infravermelho passivo
1. A passive infrared sensor that detects motion by measuring infrared radiation emitted by objects in its field of view, commonly used in security systems and automatic lighting
The PIR sensor automatically turns on the lights when it detects movement in the room.
O sensor PIR aciona automaticamente as luzes quando detecta movimento na sala.
2. An electronic device that responds to thermal energy changes to trigger alarms or activate devices
Modern burglar alarms often use PIR sensors to detect intruders.
Alarmes modernos frequentemente usam sensores PIR para detectar intrusos.
PIR sensors are increasingly common in Brazilian smart homes and commercial buildings for energy efficiency and security purposes. In Portugal, similar technology is widely used but terminology may vary between 'sensor' and 'detetor'. This is standard technical vocabulary in both countries' construction and home automation industries.
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