Back heating structure, the circulating fan in the back plenum distributes horizontal air flow evenly over the samples on each shelf Temperature control from ambient+5 to 200°C Available for Programmable and fixed value LCD display control panel and non-volatile memory P.I.D microprocessor control with integrated auto-diagnostic system Multi safety features against overheating , leakage, or over-current. "Push & Lock" air tight door closure system. Sleek profile design.