Evolution CO2 Complete Ecotechnics is a kit for measuring and maintaining the ideal CO2 level in the growing environment. The kit includes a probe, a controller with a state-of-the-art microprocessor that monitors and controls CO2 levels using infrared technology, and an Evolution Digital Fan Speed Controller. It offers intelligent multi-stage CO2 dosing, ventilation control, multilingual support, programmable modes and a pressurized tank with CO2.