In rare cases, high interference pulses are introduced into the 230 V network when electrical devices are in operation, which can affect digitalSTROM communication. This can happen, for example, when several switching power supplies are operated in close proximity at the same time. In such cases, the device filter is installed in front of the interfering device and minimizes the interference to the network caused by high-frequency interference. The dS-FD210 is intended for high-performance devices up to 16A, such as solar systems and induction cookers. For plug-in devices up to 4A, please use the dS-FD200.