KEY SWITCH. range of product: Harmony XB4 - device short name: ZB4 - mounting diameter: 22 mm - head type: standard - return: to centre - operator position information: 3 positions +/- 45° - type of keylock: Ronis 455 - key withdrawal position: center. Benefits: .. Applications: .. Benefits: .. Applications: Industry: machine manufacturers (automotive, textiles, timber), control system panel builders..