Special Features:*Low Lead Compliant*Infrared Sensor Turns Water on and off for Hands Free, Fast and Safe Operation *Operates on 6 Volt Battery or Power Supply (Batteries Included) *Battery Lift 1-3 Years Based on Usage *Built-In Low Battery indicator Light *Ideal for All Hand Sinks, Hospitals, Scrub Sinks, Lavatories and Food Establishments *Ideal for Retro-Fit, Easy Installation *30 Second Time Out and 2 Second Closing Delay