ONE BUTTON CONTROL WATER FLOW METER W/RATE AS-121-1

One-button control for easy operation. Top with 3/4" female connector, bottom with quick connector. LCD display to show 1, 2, auto, rate.  Auto is for single time water flow volume (back to Zero automatically). Rate to show the updated water flow rate.  1, 2 to show the water volume accumulation, can keep the records for one day, one week, or one month.  Lit/Gal unit changeable.