Ez flush - automatic retro-fit kit for water closets & urinals zurn zerk-cpm e-z flush aquasense retrofit kit - the aquasense a e-z flush unit is designed to provide automatic flushing for urinal and/or water closet flush valves. The unit features a 6vdc motor actuator with automatic infrared sensor, user-in view l.E.D., Low battery indicator light, switchable 24 hour auto-flush and three second delay flush to deter flase flushing, 10 degree angled sensor for optimum user detection, courtesy flush button, high impact resistant glass lens and chrome palted metal cover. The unit comes complete with 4 c batteries, wrench for installation and allen key for hte battery compartment.