The Serin deck-mount commercial faucet from American Standard includes a sanitary hands-free sensor operation, with an innovative automatic adjustment upon start-up that takes into account the sink size, and other factors. This easy-to-maintain faucet has a lead-free, vandal resistant design and innovative features designed to help the faucet last longer in high-use applications. Self-Adjusting Sensor: Sensor automatically sets the activation range on start-up by evaluating sink size and other factors. Will adjust range to adapt to changes in the bathroom environment. Sensor in Spout Tip: Clean, streamlined style. Hidden sensor reduces vandalism. Hygienic, touch-free operation. Self-Cleaning Solenoid Reduces Maintenance: Integral wiper spring prevents clogging and run-on. Easy to Service Integrated Strainer: Patented in-line strainer protects the solenoid from debris. Strainer is enclosed in removable debris cup for easy service.