Audio-Video speaker unit from the Ultra series for the Simplebus system SB2, including a terminal block for rear mounting with direct connection for up to four analog doorbell buttons, a 1/4'' CCD color video camera, and LED lighting for the video camera. An integrated feature is the handicap function according to DIN 18040, with status indicators for door calls, readiness for conversation, door opener function, and participant availability, visually represented with LEDs behind standardized handicap symbols, as well as an acoustic voice output of the statuses. The speaking connection includes echo suppression, a dust- and waterproof speaker, an electret microphone, and adjustable speaker volume on the front. A DIP switch unit is provided for addressing participant addresses and special functions. There is a possibility for smart programming of participant addresses. Integrated electronic door opener function (3A) and additional relay contacts C, NC, NO with 10A. Timed door opener input and door open indicator. 33V DC power supply via the corresponding power supply unit. Designed for installation in the mounting bracket.