センサー

せんさー
noun
sensor
electronicstechnology
1. sensor; detector
A device that detects light, heat, motion, sound, or another physical signal and converts it into an electrical output. A loanword from English "sensor," common in everyday and technical contexts.
人(ひと)が近(ちか)づくとセンサーが反応(はんのう)する。
The sensor reacts when a person approaches.
このライトはセンサーで自動的(じどうてき)に点(つ)く。
This light turns on automatically by means of a sensor.
最近(さいきん)の車(くるま)には、障害物(しょうがいぶつ)を感知(かんち)するセンサーが付(つ)いている。
Recent cars come equipped with sensors that detect obstacles.

A loanword from English "sensor." Used both in everyday speech (for automatic lights and doors) and in technical fields.

Common collocations

Similar words

  • 感知器(かんちき): detector — a more technical Japanese term, as in a fire detector.
  • 検知(けんち): detection — the act of detecting, not the device.

Related Words

Compare: 検知(けんち) (detection)
Related: 自動運転(じどううんてん) (autonomous driving, self-driving)
Related: 自動(じどう)ドア (automatic door)
Compare: 計測器(けいそくき) (measuring instrument)
Compare: 探知機(たんちき) (detector)
Compare: 感知器(かんちき) (detector)
general
Added 2026.7.12 6:17 · Revised 2026.10.14 21:25
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