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Himalaya Baby Care Products Typical applications of motion detection are detecting the stalling of conveyors or the seizing of bearings. Key specifications include the intended application, sensor type, sensor function, and minimum and maximum speeds. More information about motion sensors may be found in our related guide All About Motion Sensors. Proximity Sensors are electronic devices used to detect the presence of nearby objects through non-contacting means. A proximity sensor can detect the presence of objects usually within a range of up to several millimeters , and, doing so, produce a usually dc output signal to a controller. Proximity sensors are used in countless manufacturing operations to detect the presence of parts and machine components. One scheme could involve the regional social-services department using the sensors to help the elderly, while another could identify if a beach has become too crowded and offer alternatives to swimmers. In another example, AT&T is