AC110V,220-240V, or DC12V-24V, or rechargeable battery temperature Low to -7 degree C. IC Control & compressor refrigeration;Reliable & ... temperature5-10°CFreezing Speed(reach 0°C in 30min., Ambient temperature:30°C)RefrigerantR134aCooling insulatorsolid polyurethane foam, 100% CFC & HCFC freeUnit ...