Key switch RONIS, 22 mm, round, plastic, closing no. SB30, with 2 keys, 2 switch positions O-I, latching, switching angle 90°, 10:30h/13:30h, key removal O+I, possible special closures: SB31, 421, 455 SIRIUS ACT key switches for higher access security requirements.Under the SIRIUS ACT brand name Siemens offers a unique portfolio of control and signaling devices with worldwide product approvals in four modern design series made of robust real metal and high-quality plastic.The innovative snap-on concept simplifies the assembly so far that only one hand and no special tools are required for this. As mounting holes, nuts-free holes are sufficient, since a 100% anti-twist protection is already integrated.Thanks to the consistently high degree of protection, the robust devices are suitable for industrial use and suitable for outdoor use. Even the cleaning with high pressure jet is possible. Neither dust, oils nor aggressive alkalis can disturb the reliable operation.In addition to standard