The RTH-K15 with Expansion option is a Monitoring and Control Interface from Rohde & Schwarz that is used with their range of RTH Scope RIder Remote Instruments. This unit enables the remote management of multiple instruments at once, as well as the simultaneous measurement of multiple signals. It provides a user with a quick and reliable connection between measuring instruments, computers and data networks, allowing for faster measurement, increased productivity and improved accuracy. Additionally, the Expansion option provides access to the AnalyzerCITY software, which allows the device to be used simultaneously on two PCs, or two separate instruments, connected in a loop configuration. This provides a more comprehensive monitoring and control system, ideal for a variety of applications.The RTH-K15 with Expansion option is suitable for a range of industries, from academic and industrial research to production and automation, providing users with the power to make a wide range of measurements from laboratory and field bases. Its ease of use, cost-effectiveness and reliable performance make it an attractive choice for any measuring and monitoring needs.