The mounting kit SAMH-S is used to secure proximity sensors in the slot of pneumatic drives. It provides a captive, positive-locking connection that is protected against manipulation and so meets the requirements of the Machinery Directive. It can be used for binary sensing of the drive technology in safety circuits, for example for receiving feedback from pneumatically actuated safety doors. This does away with the need for additional sensing via pushbuttons mounted externally on the safety door. The design of the transparent circlip forms a functional unit with the sensor and the yellow marking clearly identifies it as a safety component.