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The Evolution 4000 from Hired Hand features a bright white LCD display that does not fluctuate in contrast with temperature changes, one touch language transition (English-Spanish), 40 on/off stages with available expansion to control the operation of any combination of heaters, fans, evaporative cooling, natural ventilation curtains and power ventilation inlets. It has a SD card slot for upgrading software, copy/paste programs and enhanced historical data collection.