You can only get answer from the choices I give. But try to explain your choice. The sensor would just the distance then set off an alarm, the installation expert explained it was called a what kind of sensor?. Make the most suitable choice from these : near, closeness, here, proximity, this
user
i would choose "proximity" sensor. the term "proximity sensor" is commonly used to describe a sensor that detects the presence or distance of an object without coming into physical contact with it. it would make sense for the alarm to be triggered when an object is within a specific range, making it a suitable term for this type of sensor.
assistant
I would choose "proximity" sensor. The term "proximity sensor" is commonly used to describe a sensor that detects the presence or distance of an object without coming into physical contact with it. It would make sense for the alarm to be triggered when an object is within a specific range, making it a suitable term for this type of sensor.
assistant