Open feedback unit are the most common standard and also the easiest way to detect most GEA Aseptomag valve types.

One or two stainless steel brackets, depending on the valve stroke and number of proximity switches, can be attached with screws to the pneumatic actuator. The proximity switches are mounted using the slot, which is available in two different dimensions, one for M8 and one for M12 (standard) proximity switches. The power cables for this type of feedback are connected directly to the cabinet.