0.5 gpf (1.9 lpf);Activation distance, arming time, flush delay, and several other parameters can be adjusted by approved tech professionals using Cortex mobile app;Chloramine and chlorine resistance on all rubber components exposed to waterway;125-micron filter protects internal components;Locking stop cap provides protection against vandalism;Adjustable automatic sentinel flush keeps trapway fresh while saving water;Mechanical override enables flushometer to be used manually even during a power outage;Powered by long-lasting energy cell to eliminate frequent battery replacement;Patented piston Technology for superior flush volume accuracy