... practical.LCD screen, clearly to be read.Against power supply fluctuation; no injection remainingTechnical Data.Power consumption: ≤30VA. ... .Main power: AC 100-240V, 50Hz/60Hz .Internal power: NiMH battery 12V (fully charged, ≥4hrs at 5.0 mL/h)Performance ... 3%.Block alarm: high, middle, low.Monitoring data: Failure, Low battery, AC failure, Block, injection finished, injector empty, .Injector dropped, ...