Microprocessor-based temperature controller, -110℃~-152℃can be set freely , controlling precision is1℃, Digital temperature display. Keyboard lock and password protected configuration page,Delayed start and safe stop interval between restart and being terminated Audible and visual alarm: High or low temperature alarm, Power failure alarm,  Low battery alarm,Door open alarm, Filter blocking alarm, system failure alarm. With temperature printer, record 7days data. 72 hour battery back up for printer and controller display. Power supply: Normally 380V /50HZ 3 phase, can be changed as 220V 50/60HZ 1phase.

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

Imported famous Tecumseh compressor, with Germany EBM Fan motor Unique refrigeration circulation and unipolar compressor oil-lubricated technology China Patent technology of mixture refrigerant, which composed of  R134a,R404a,R23,R410A,N2 and so on, CFC free Certificate: CE, ISO9001, ISO14001,ISO13485Application to scientific research, low temperature test of special materials, freeze red blood cell, white blood cell, skins, DNA/RNA, bones, bacteria, sperm and biological products etc. Suitable for use in blood bank station, hospitals, sanitation and anti-epidemic stations, biological engineering, laboratories in colleges & universities, enterprises and so on.