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. Above-counter valve for easy installation and maintenance. Vandal-resistant aerator. 5" (127 mm) spout reach. Without temperature mixer. Includes 30-year Hybrid Energy Cell. Less drain. 0.5 gal/min (1.9 l/min) flow rate. Powered by the 30-year hybrid energy system Insight‚Ñ¢ adaptive infrared technology Waterproof shroud protects electronic components Single-hole mounting. Brass construction.