This ultra-low freezer is designed for safety, reliability, and energy conservation. Powered by hydrocarbon (HC) refrigeration, this saves energy the unit is optimizes energy efficiency by 30%. To preserve temperature settings, the doors are lined with 70mm of insulation, 25mm of vacuum insulation material (VIP), and 4 layers of silicone seal. Near the control panel is a USB port that can store more than 15 years of data – making this minus 80 freezer ideal for any lab.