The KOHLER hybrid energy system is a first-of-its kind 30-year power solution for touchless faucets. When combined with Insight Technology, this system provides an environmentally-friendly, virtually maintenance-free electronic faucet. 0.5 gal/min (1.9 l/min) flow rate. Factory set 30 second max. continual run cycle. Vandal-resistant aerator. 24" (610 mm) flexible supply hoses for easy installation. 5-5/16" (135 mm) spout reach. Less drain. Less temperature mixer. Powered by the 30-year hybrid energy system Insight™ adaptive infrared technology Waterproof shroud protects electronic components Single-hole mounting. Brass construction.