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Photoelectric sensor

A photoelectric sensor is an optoelectronic device used to detect people, objects, or movement by detecting the interruption of a light beam. It typically consists of a transmitter that emits a light beam (often infrared) and a receiver located opposite it that detects the light. If the light beam is interrupted by an object, the photoelectric sensor detects this and triggers an action, such as opening a door, stopping a machine, or setting off an alarm.

There are different types of photoelectric sensors, including through-beam sensors, in which the transmitter and receiver are separate, and retro-reflective sensors, which use a reflector. Photoelectric sensors are used in a wide range of applications, from security and access control to industrial automation. Their precision and reliability make them an indispensable component of modern control systems.

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