Precise temp. control system: • Italy CAREL Micro-computer control, LED screen with 4℃ (±1℃) adjustable • Platinum resistance temp. Sensor • Read ability: 0.1℃, easily to operation. Safety:  • Safety door lock and controller setting password to prevent unauthorized access. • Visual and audible alarm system: High/low temperature, power failure, sensor error, door ajar. • Power failure protection: turn on delay of the cooling system after power failure. • Controller error protection: the cooling system will remember the normal working cycle and keep working depending on this memory when controller or two sensor failed. Refrigeration system: • Germany SECOP compressor • Germany EBM cooling fan • Germany DANFOSS dry filter • Germany DANFOSS condensing system Humanized Design:  • Adjustable shelves • Firm glass door • Inner light • Lockable • Wide available voltage range: 187V~242V Optional:  • battery to display temperature and power alarm system for up to 8 hours without AC power. • Auto on/off LED light with manual switch on control panel. • USB recorder • UPS light • Remote alarm (short massage)