Memmert Constant Climate Chamber (HPPeco) - this programmable model is the 115 volt, Peltier-technology seamlessly heats and cools, with TwinDISPLAY digital controller. HPPeco humidity range is 10 to 85% rh without light (upto 90% with light). Each individual appliance is tested according to the requirements of DIN 12 880: 2007-05. Includes (2) Stainless Steel Grid Shelves, Atmocontrol Software, Atmocontrol Manual, Operation manual, Calibration Certificate and Power Cord - energy efficient, precise.