GEFRAN magnetostrictive linear position transducers work just like other linear position sensors, by translating a linear position to an electrical signal. However, they are contactless which provides a longer life because there is no mechanical wear; since they use magnetostrictive technology ,they are also immune to electromagnetic interferences. Transducers are available in stroke lengths from 50 to 500mm, and with an analog output signal of either 0-10VDC or 4-20mA for single output models. Double output models provide either a 0-10VDC and reverse 10-0VDC signal, or a 4-20mA with a 20-4mA reverse signal. The electrical connection is made via a standard DIN connector or M12 connection and all units are IP67 rated. Cursors are sold separately. Gefran magnetostrictive linear position transducers from AutomationDirect have a 3-year warranty.