Set consists of -A call button with LED reassurance lamp (red) and 2m pull cord including central plate in design system M. A stop button with LED reminder lamp including central plate in design system M. A room signal light (white) for optical (red LEDs) and acoustic signaling. A flush-mounted power supply unit to provide the system voltage 24 VDC, 0.5A. For additional optical and acoustic signaling, an ELSO SIGMA/WC call group signal light, ELSO Art. 740020, can be connected. Use without claw fastening. Scope of delivery Without frame. Material: brilliant thermoplastic. Color: glossy polar white.