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ROESSEL sensors are a general term for sensors designed to detect without contacting the target, replacing contact-based detection methods such as limit switches. They convert the movement and presence information of the target into electrical signals. Detection methods that convert to electrical signals include those utilizing eddy currents generated in the metal body of the target due to electromagnetic induction, those detecting capacitance changes in the electrical signal caused by the approach of the target, and those using reed and guide switches. ROESSEL sensor features 1) Since detection can be performed in a non-contact manner,