The invention relates to a user interface device for controlling an electrical consumer, in particular, a light system. Further, it relates to light system using such user interface device. Moreover it relates to a method for controlling such light system using a user interface device. To provide a user interface device, a light system and a method for controlling a consumer load providing feed forward or feed-back information facilitating an easy and intuitive use of the user interface device when controlling a light system, a user interface device for controlling a connected light system (44) is proposed, comprising: a display unit (12) including a plurality of LEDs (13) in a matrix form, wherein each of the LEDs (13) of the matrix is addressable individually; an input unit (11) to receive a user input; a control unit (40) adapted to receive a signal (1a) based on the user input and to generate an information signal (1b) provided to the display unit (12) and to generate a control signal (1c) for controlling the connected consumer load (44).