Any number of wireless receivers can be assigned to a channel of the wireless hand-held transmitter. Three groups (A, B or C) can each be assigned eight channels for the switching, dimming, and blind functions, i.e. 24 wireless channels can be operated individually. An All-on or All-off button is also available on the device. Five light scene buttons allow individual scenes to be freely programmed, and a master button is used for switching on/off or dimming light scenes.