The AVENTICS Series 494 position indicator is a universal detector designed for use with a range of pneumatic cylinders and actuators. A permanent magnet mounted on the air cylinders piston activates the 494 Series non-contact magnetic position detector, which is fastened on the outside of the non-magnetic cylinder barrel. The position indicator is suitable for cylinders used in packaging, press room and metal stamping, automotive, case packing, and dust collector system applications