IFM Electronics MK5311 C-slot magnetic cylinder sensor is made of PA (polyamide) housing, stainless steel fixing element. It features DC PNP electrical design, 10 to 30V DC (supply class 2 to cULus) operating voltage. It is used to sense the position of pistons in pneumatic cylinder. They are directly mounted onto the cylinder. The ring magnet attached to the piston is sensed through the housing wall of non-magnetisable material.