Housing for control devices, 22 mm, round, housing material plastic, upper part of housing yellow, With protective collar, 1 plastic command point, A=EMERGENCY-STOP mushroom pushbutton red, 40 mm, twist-off unlocked, 1NC, 1NC, screw connection, floor mounting, top and bottom of each 1xM20 SIRIUS ACT housing for mounting the 22.5 mm command and signaling devices with separate locations of control units and control cabinets.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