Finally there is a reliable way to precisely detect the end limit positions of pistons and cylinders, particularly when that detection is critical to the operation and/or cn result in a disaster if the detection fails. Mechanical limit switches have been used successfully in the past, but can fail prematurely or may have limited life cycles. Dirty environments can exacerbate the problem. Now designers have turned to the Reed Sensor which uses hermetically sealed reed switches, which are ideal for critical requirements where reliability is essential. One sensor for such applications could be the new MK26 Reed Sensor from MEDER, characterized by its high switching power in combination with a compact design. Its housing measures only 32mm x 10mm x 6mm, making the MK26 the most slender package within the standard rectangular reed sensor series, as compared to the MK04, MK12, MK13 and MK21.