# Drexel und Weiss nymea plug-in for Drexel und Weiss HVAC systems. ## Supported Things * x2 A9 ## Requirements * The package "nymea-plugin-drexelundweiss" must be installed. * A modbus RTU interface must be avaible to nymea. * The modbus RTU interface must be set to: * Parity none * 8 Data bits * 1 Stop bit ## More https://www.drexel-weiss.at