Weinzierl develops software and hardware components for building systems. The focus is on building networking based on the KNX standard. Weinzierl offers its customers comprehensive advice on system design and the full development of hardware, firmware and application software up to the certification of the product by its in-house test laboratory accredited by the KNX Association. In addition, Weinzierl is also active as a manufacturer of KNX devices - the focus is on the interface and gateway solutions which are sold under its own brand but also as OEM versions. As developer of a KNX stack that performs well in millions of devices, with the new KNX stack NGS (Next Generation Scalable) and tools such as KScript Weinzierl provides its customers with the appropriate basis for the development of their own devices. If short development times are critical then the KNX modules of Weinzierl are the best basis for product development. Tools such as the kdrive SDKs and the bus monitor Net\'n\'Node completes Weinzierls offer for the KNX development.