... Occlusion, Infusion finished, Pause overtime, Leakage, Empty, Low battery, Battery damaged, Abnormity of drop detection, infusion, motor, sound, drip ... brightnessCommunication Port: RS-232 (for nurse call)Power Source: AC: 100V ~ 240V, 50Hz/60Hz, ≤ 25VARechargeable Ni-MH battery: DC12V, 2000mAh ... , life: ≥ 4 hours at 25mL/h, remaining battery displayed.Operating Conditions: Temperature: 5°C ~ 40°C ...