Features ■ Microprocessor control, ensure the inside temperature of 4°C ±1°C accuracy is 0.1°C ■ Suggested ambient temperature: +10~32°C. ■ Specially designed forced-air cooling system, ensures frost- free cabinet and good temperature uniformity. ■ Toughened glass door with heater to avoid condensation. ■ Wide available voltage range: 187V~242V.