ATO through beam photoelectric sensor is a type of sensor used to detect the presence or absence of objects by transmitting a beam of light from one unit (transmitter) to another unit (receiver). These sensors consist of two separate components, typically placed opposite each other across a detection area. Through beam photoelectric sensors are commonly used in industrial automation, packaging, material handling, and other applications requiring reliable object detection over long distances. They offer advantages such as high accuracy, long sensing ranges, optional size M12/M18/M30, immunity to environmental factors like dust and dirt, and suitability for detecting objects of various shapes, sizes, and materials. In automatic door sensing systems, ATO M12 through beam photoelectric sensors play a critical role in ensuring efficient and reliable operation. Installed on either side of the doorway, these sensors emit a continuous beam of light across the door's entrance. When an object, such as a person or vehicle, interrupts the beam, the sensor detects the obstruction and triggers the automatic door mechanism to open or close accordingly. This application is especially common in retail stores, airports, and other public buildings where hands-free access and smooth traffic flow are essential. The M12 form factor ensures easy installation and compatibility with standard mounting hardware, while the through beam design offers long-range detection capabilities, allowing for reliable detection even in high-traffic environments. By integrating ATO through beam photoelectric sensors into automatic door systems, businesses and institutions can enhance convenience, accessibility, and safety for their patrons and employees alike. Overall, ATO through beam photoelectric sensors provide a robust and versatile solution for detecting objects in diverse industrial settings.