Photo Eyes - also known as photo-electric sensors - are sensors used to detect the presence of an object or vehicle without making any physical contact. A Photo Eye consists of an Emitter and a receiver. Emitters send a continuous signal and when it is interrupted the device knows an object has entered its detection range. Photoelectric sensors can be used in a wide range of both residential and commercial applications including gate automation, vehicle counting, arrival notifications, or automation of garage doors and lights.
Through Beam - Emitter and receiver are in separate housings and are mounted directly across from each other.
Retro-Reflective - Emitter and receiver are located in the same housing, a piece of reflective material is used to bounce the signal back to the device.
Diffuse-Reflective - Emitter and receiver are located in the same housing, but without any reflective material mounted opposite to the device. This style of photo eye is less accurate but more cost effective than other styles.
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