KNX systems have become a worldwide standard in building automation. They are based on a special cable that is installed in addition to the conventional power line in the case of a new building or renovation and serves to network the various KNX-capable elements of the home automation system with each other. The main area of application is for controlling lights, blinds and room temperature. However, a KNX system can also seamlessly integrate other functions and technologies such as door intercom systems, alarm and audio systems or sanitary and entertainment systems. The Gira Pushbutton Sensor 4 presents a high-quality line of devices for operating KNX smart home applications. Its design is characterised by simple and clear lines that lend it an elegant appearance. This effect of exclusivity is further emphasised by the use of high-quality materials such as stainless steel, aluminium and glass. The Gira Pushbutton Sensor 4 features generously dimensioned buttons that offer a high degree of user comfort, as well as the option to add individual laser engraving to further enhance its user-friendly operation. The functional form and use of long-lasting materials lend the device a high-quality look that integrates easily into a wide variety of environments. In addition, for a uniform appearance, the device can also be combined with the matching Gira Esprit design line when installing additional elements such as socket outlets.