4.3-inch KNX Capacitive Touch Panel (TP43I01KNX) is an Eelectron product for KNX-based building automation. The TP43I01KNX is a compact 4.3-inch capacitive touch panel designed for visualisation and control of KNX installations. It provides a graphical room-control interface with up to 48 control functions arranged across six configurable pages. Users can customise backgrounds and a favourites page, access weekly time schedules and view alarm information with an event log. The panel also includes an internal scene controller and two independent thermostat functions, making it suitable for lighting, shading and room-temperature control in residential or commercial spaces.

The device has four multifunction inputs that can be individually configured as binary inputs or temperature-probe inputs, together with an integrated temperature sensor and an RTC with backup battery. The TP43I01KNX base version is distinct from the TP43I11 and TP43I21 versions: Ethernet/IP remote-control connectivity and video-door-phone functions are associated with the higher variants, not assumed for this I01 model. The panel includes its KNX bus coupling unit but requires a separate 12–30 V DC auxiliary supply; the manufacturer specifies a maximum power consumption of 2.8 W. It is intended for flush mounting and can be installed in portrait or landscape orientation.