I worried my HMLan adapter to first to drive with him a KeyMatic adapter via a FHEM server. This provides a cost-effective and flexible way to HomeMatic devices for switching, which require a signed communication with the panel. The installation of the adapter itself and the training of new equipment goes relatively quickly, provided that you have cleared technical difficulties out of the way. Especially with the included software would HomeMatic but make improvements in the future: If you have a Mac, you need first a virtual machine because Windows is assumed. In addition, the connection to the adapter HMLan often could come only after several restarts of HMLan about. Overall, especially at the beginning very frustrating. Fortunately, a detailed how-to instructions found on meintechblog_de that both the configuration (and quirks) declared the original software and the integration into FHEM. Information that you usually have to search with difficulty in the network itself. Overall, I would buy the adapter again, because it is so far gone always stable in conjunction with FHEM, all HomeMatic device has switched reliably over a greater distance and loudly ammeter requires only 1 Watt of continuous use.