What is another word for photo eye?
Pronunciation: [fˈə͡ʊtə͡ʊ ˈa͡ɪ] (IPA) 
The term "photo eye" is often used to refer to a type of sensor that detects the presence or absence of an object by detecting changes in light transmission. However, there are a variety of other terms used to describe this type of sensor, including photoelectric sensor, optical sensor, light sensor, photo detector, and photoelectric switch, among others. Regardless of the term used, these sensors are widely used in a range of industries and applications, from manufacturing and automation to security and surveillance. They are known for their precision and reliability, and are often a critical component of various systems that require precise detection and measurement.
