Handsetless audio house station CLASSE100 A16E2-wire bus system, free intercom, in addition to the two physical call buttons (accept or end call), it has 3 sensor buttons for: opening the door, switching on the staircase light (activator order no. 346210 is required) and switching the door station on or off as well as 4 freely configurable additional buttons (e.g. internal speaking, additional door opener, etc.), 16 melodic ring tones can be set, including doctor connection/door automat function, for door/floor call with call differentiation, volume of the ring tone is adjusted using the side control, LED display for: ring tone deactivation, door opener and connection status, surface mounting using the wall bracket supplied, a table accessory (order no. 344692) is available separately, connection for BUS