RAMO EDGE Emergency Stop Switches RAFI RAMO EDGE Emergency Stop Switches feature mounting hole diameters of 22mm and 30mm for simple integration in most applications. The plug-and-play M12 terminal of the RAFI key switch series enables secure and flexible assembly with efficient use of both cabling and working time. The RAMO EDGE series includes 22E/30E emergency stop switches, 22/30 EDGE mounting brackets, and 22F/30F RJ45 cable bushing. RAFI RAMO EDGE Emergency Stop Switches are ideal for electrical engineering, vehicle construction, and industrial robot applications.