set_master_code() Ask ZWave addon to set master code for ZWave node. Note, master code must be supported in user code CC capabilities (Version 2 only). If CC supports master code deactivation, pass empty string to deactivate master code. Call Example Edit zwave.set_master_code() params: node_id (int), channel_id (int) return: none. Edit require "zwave" zwave.set_master_code(node_id, channel_id, "1234")