The HAUTAU RWA stairwell control set includes the control center as well as the operating and signaling elements for a smoke and heat extraction system. It can connect up to 4 window drives and a maximum of 10 detectors or buttons to the control center. Delivery includes: 1 smoke extraction control center RAZ K, surface-mounted, white; 2 fire buttons FR 900 Si, orange; 1 smoke detector RM 523, white.