The rocker for series switches. Rocker for roller shutter switches and buttons from Systemm, System Design and System Area can be plugged onto the 2-way bus coupler insert. As a special design, the AQUADESIGN and AQUACLASSIC switch ranges can also be adapted for the 2-way bus coupler insert. With integrated bus coupler. In the version with a middle position, the rockers can be operated up and down (three-position rocker). In the version without a middle position, telegrams are only generated when the lower half of the rocker is operated (two-position rocker). For installation in a 60 mm installation box. With button and LED for the programming process. KNX software functions: For article number 671298: Switching. Switching. Dimming. 1 blind group. For article number 671299: Switching. Switching. Dimming. 2 blind groups. Version: with middle position.