Ultra Freezer -86ْC,C.ty 706 ltrs ,Upright 4 Independent Compartment with 4 Inner Doors + 1 External Solid Door Cooling System 2 stages in cascade with natural gasses. Tempe. Range: -40°C/-86°C; Temp. Set Point: -80°C (Adjustable) Temperature Alarm Limits: LOW -90°C; HI -50°C (Adj.)