The Gira Binary Input 6-gang 10–230 V AC/DC (2126 00) connects external voltage signals to a KNX automation system through six input channels. It is intended to translate compatible contact or control signals into KNX telegrams, allowing external devices and conventional controls to participate in building automation. The stated input range is 10–230 V AC/DC, so the connected signal must fall within the manufacturer’s specified limits. Published technical data lists a maximum KNX bus current consumption of 7.5 mA and a fitting width of 36 mm, equivalent to two DIN modules. Verify input wiring, isolation, supported functions and the correct ETS application in the official documentation before installation.