Specification: Food Tank Capacity: 6 liters Screen: LCD screen Power: DC 5V power adapter; 3 x alkaline D batteries Power Adapter: AC110-240V input DC 5V output Working Current: Avg. 80mA Operating Temperature: -30℃-50℃ / -22°F - 122°F External Socket: 3.5mm power socket Amount per Portion: 2.5tsp / 12.5ml Net Weight: 2.25kg / 4.96lbs Dimensions: 21.5 x 21.5 x 38cm / 8.5 x 8.5 x 15in What’s in the box: 1 x PETLIBRO Automatic Pet Feeder (6L) 1 x 5V Power Adapter 1 x Desiccant Bag 1 x User Guide Kit Please Note : 1) Please use the original 5V power supply. 2) Change the batteries every 6 months if not in use for a long time 3) Suitable for cats and small to medium dogs. 4) Fill in dry pet food only; kibble sized 2-12mm / 0.07-0.4in in diameter.