Conditioned chambers of the CLIMACELL line provide complex conditions for precise and reproducible simulation of various climatic conditions. E.g. for tests of stability of parts, food products or chemical packages. Research of germs, plant or tissue cultures and insects. The devices offer an interesting alternative to expensive testing chambers and testing rooms. Microprocessor-controlled system of moisturizing and de-moisturizing together with high-performance lighting system allows excellent homogenous parameters for tests and growth conditions.