The RTS33 wall button from the Format B5 series is a battery-operated wall transmitter for surface-mounting in dry interiors. The transmitter is compatible with the Busch-Jaeger switch program. It is simply clicked into the switch frame and is immediately functional. It can be mounted on the wall using either adhesive pads or screws. The RTS33 is usually used as a light switch, for switching lamps ON and OFF with the 2-button control and for switching roller shutters.