Product Usage: Cryopreservation box a kind of cold preservation box that can be refrigerated and save the normal temperature of the items. Applicable to scientific research institutes, electronics, chemical and other enterprises laboratory and livestock system cryopreservation box. Structure design: 1, the outer box is made of high-quality cold-rolled steel plate, the surface of which is treated with environmental protection vitrification and spraying process. 2, the inner box is made of stainless steel, polished and corrosion-resistant. 3, the upper and lower two independent box structure, according to the need to place the items, the temperature of the two boxes do not interfere with each other, to ensure that the temperature control accuracy of the items. Technical parameters: 1, external dimensions (mm): 890 × 810 × 1884 (width * depth * height) 2, internal dimensions (mm): upper chamber: 720x649x563 lower chamber: 720x649x563 3、Effective volume (L): 528 4、Shelves: 2 in the upper chamber, 2 in the lower chamber 5、Exterior door body: 2 polyurethane foam doors 6、Storage Temperature：-15℃～-30℃ 7、Door locks: 2 each on the top and bottom, 4 in total 8、Rated power supply: ~ 220V 9、Rated frequency: 50Hz 10、Climate type: SN N 11、Alarm mode: sound and light 12、Alarm function: high, low temperature, sensor failure 13、Rated power: 1200W