Features:1) Ambient temperature: 5 - 40°C2) Power supply: AC220/110V, 50Hz or DC12V, AC110V available if required 3) Power consumption: less than 40VA4) Infused volume range: 0 - 9,999ml5) Flow rate range: 1 - 1,000ml/hour in 1ml/hour increment 6) Infusion limitation options: 1 - 9,999ml/hour7) Infusion accuracy: 1 - 1,000ml/hour, 10%8) Audible and visual alarms of "complete", "occlusion", "air-in-line", "door open" and "low batt"9) Keep vein open (KVO) rate will be activated once "complete" of "air-in-line" alarms10) 4-hour continuously operation at 50ml/hour with built-in rechargeable Ni-MH battery11) Dimensions (L x W x H): 190 x 125 x 250mm12) Weight: 4.25kg producing area:China