Features: \n\n1. polished stainless-steel chamber. \n\n2. latest pid controller. \n\n3. uniform distribution of air temperature \n\n4. forced-air convection. \n\n5. double layer glass door, larger viewing window. \n\n6. independent temperature-limiting alarm system ensures experiments run safely (option). \n\n7. rs485 connector is option which can connect computer to record the parameters and the variations of temperature (option).\n