Technical parameters: Cooling performance Box center -86℃ (ambient temperature 32℃, no load) Temperature control range -40℃~-86℃ (ambient temperature 32℃, no load) Rated voltage AC220V,50Hz Rated power 650W Noise level 52dB[A] (background noise; 20dB) External Dimensions W 844 x D 807 x H 1594(mm) Internal dimensions W 465 x D 455 x H 820(mm) Effective volume 158 liters Shell Painted steel plate Inner box Stainless steel plate Outer door Painted steel sheet Inner door Stainless steel plate, 2 doors Shelves 3 stainless steel shelves (adjustable) Capacity: 40 kg Inspection hole 30mm dia. Insulation Special rigid polyurethane foam filling Compressor hermetically sealed Evaporator Tubular plate type Condenser Copper tube fin type Refrigerant Mixed media Temperature controller Microcomputer control system Temperature display LCD touch screen Temperature sensor Platinum resistance (PT 100)