1.Working conditions: ambient temperature 10 ~ 32℃, working environment humidity: 20-80%, power supply 220V ± 10%, 50 Hz ± 1HZ. 2. Style: Horizontal. 3. Display: LED digital temperature display, real-time display of the temperature inside the box and various setting parameters (temperature, voltage, ambient temperature, compressor operating status, etc.), the operating status is clear at a glance. *4. Temperature control: High-precision microcomputer temperature control system, the temperature inside the box is arbitrarily set within the range of -110 °C to -152 °C and can be stably operated. 5. Box material: high-quality structural steel plate, advanced anti-corrosion phosphating and spraying process. *6. Liner material: It is made of stainless steel inner liner, anti-corrosion, long service life and easy to clean. *7. Insulation material: thick insulation layer and VIP insulation board, multi-channel door seal design, good insulation effect. *8. The fluorine-free environmentally friendly refrigerant, invented by the Institute of Physics and Chemistry of the Chinese Academy of Sciences, has a unique refrigeration circuit with independent intellectual property rights, which has a faster cooling rate and a more uniform temperature. The single-stage oil-slip compressor refrigeration technology has a stronger refrigeration capacity. *9. Secure storage: perfect sound and light alarm system (high and low temperature, open door, abnormal voltage, power failure alarm, sensor failure, condenser heat dissipation, system failure, etc.), and the storage of items is safer; 10. Boot delay and stop interval protection function to ensure reliable operation; keyboard lock and password protection function to prevent arbitrary adjustment of operating parameters; *11. Imported high-efficiency compressor, strong power, more reliable quality, imported EBM low noise fan, energy efficient. Condensing fan and compressor cooling fan can be intelligently started and stopped according to the change of ambient temperature and the operating state of the compressor. 12. Test hole design to facilitate testing the temperature inside the box. *13. Standard temperature recording printer, you can read temperature data at any time.

Model	NB-UW128	NB-UW258
Volume	128 liters	258 liters
Dimension	1510*985*1120mm	2250*940*1120mm
Inner size	490*470*585mm	1140*552*410mm
N.W/G.W	315kg/385kg	460kg/540kg
Voltage	220V ± 10%, 50 Hz ± 1HZ.	220V ± 10%, 50 Hz ± 1HZ.
Temperature range	-110 °C to -152 °C	-110 °C to -152 °C