Big LCD display screen Door free design Alarm system ... .AlarmCompletion, blocking, battery low, air bubble, CPU error, pump stuck, abnormal control, serious power shortage, etc. Completion, ... Power Consumption 25VABattery ChargingAutomatic battery charge when transfusion pump connected with AC power supply and turned on ... ,Relative humidity: 80% or below High precision Syringe Pump & Infusion Pump