Multiple speed controller with LCD display and membrane keyboard, designed to be combined with NORDIK ECO ceiling fans. The appliance is able to control the operation of one or more fans connected to it and, through Wi-Fi communication, the switching on/off, fan speed and reversible mode. When set in automatic mode, VORT DELTA T WIFI works to reduce thermal stratification (Destratification) regulating the matched fans speed, minimizing the differences detected by two probes supplied (respectively to be installed at floor level and near the ceiling).