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| கிட்ட உணர்கருவி (A type of sensor that can determine without physical contact if an object/person is nearby, or can be used to measure the distance between the object/person and the sensor device); நெருக்க உணர்கருவி (A type of sensor that can determine without physical contact if an object/person is nearby, or can be used to measure the distance between the object/person and the sensor device) | |||
