... correct calibration.4.Work mode: ml/h and drop/min, and these two modes can switch freely.5. ... % (after correct calibration)Mechanical precision:Within ±2%Purge Rate:100ml/h~1,000ml/h (100 ml/h step) ... Volume:1ml~9999mlTotal Infusion Volume:0.1ml~9999.9mlKVO rate:1ml/h~5 ml/h (1ml/h step) ... )Alarms:End of injection, occlusion, door open, bubbles in the tube, wrong setting, low battery, AC power pulled ...