Meling -20°C~-40°C laboratory low temperature freezer DW-FL778 medical freezer is equipped with high-quality refrigeration system for fast cooling. The high-precision temperature control system can display various parameters simultaneously, including power voltage, temperature inside the cabinet and environmental temperature, which can indicate the operation status clearly. And you are free to set the temperature inside the cabinet in the range of -20°C to 40°C. The two-layer heat insulation foamed door with airbag-typed outer steal can prevent loss of refrigerating capacity in an effective way. -40℃ Ultra-low Temperature Freezer Model DW-FL778 Cabinet type Upright Capacity(L) 778 Internal size(W*D*H)mm 865*696*1286 External size(W*D*H)mm 1205*1025*1955 Package size(W*D*H)mm 1320*1155*2171 NW/GW(Kgs) 286/378 Performance Temperature range -20~-40℃ Ambient temperature 16-32℃ Cooling performance -40℃ Climate class N Controller Microprocessor Display Digital display Refrigeration Compressor 2pcs Cooling method Direct cooling Defrost mode Manual Refrigerant R290 Insulation thickness(mm) L/R:130, B:130 Construction External material Cold rolled steel Inner material Stainless steel / Galvanized steel(optional) Shelves 3(stainless steel) Door lock with key Yes External Lock Yes Access port 3pc. Ø 25 mm Casters 4+(2 leveling feet) Data logging/Interval/Memory capacity USB/Record every 10 minutes /1000,000data Backup battery Yes Alarm Temperature High/Low temperature,High ambient temperature Electrical Power failure,Low battery System Sensor failure, Condenser overheating, Door ajar, Communication error, Built-in USB datalogger failure Accessories Standard RS485, Remote alarm contact. Alat laboratorium umum