This is the 2756th most frequent French word.
capteur
Sensor or detector.
Here, 'capteur' is used in its technical sense as a device designed to measure or detect specific physical properties, such as light intensity.
Le capteur de lumière détecte les variations d'intensité dans la pièce.
The light sensor detects intensity variations in the room.
In this example, 'capteur' refers to a sensor that monitors movement as part of the functionality of a wearable device.
Cette montre utilise un capteur de mouvement pour suivre votre activité physique.
This watch uses a motion sensor to track your physical activity.
'Capteur' here indicates sensors placed in a natural setting to collect data for environmental research.