Royal Optima SMO Exposed Battery Powered Side-Mount Sensor Operated Flushometers Quiet, Exposed, Diaphragm Type, Chrome Plated Closet Flushometer for either left or right hand supply with the following features: PERMEX Synthetic Rubber Diaphragm with Dual Filter Bypass ADA Compliant OPTIMA ® Battery Powered Infrared Sensor for automatic “No Hands operation Chrome Plated Infrared Sensor Housing Angled Sensor Window Manual Override Flush Button Four (4) Size C Batteries included “Low Battery Flashing LED with Optional Audio Tone “User in View Flashing LED Optional 24 Hour Sentinel Flush Infrared Sensor Range Adjustment Screw and Reset Button 1 I.P.S. Screwdriver Bak-Chek Angle Stop Free Spinning, Vandal Resistant Stop Cap Adjustable Tailpiece High Back Pressure Vacuum Breaker Flush Connection with One-piece Bottom Hex Coupling Nut Spud Coupling and Flange for Top Spud Sweat Solder Adapter with Cover Tube and Cast Set Screw Wall Flange High Copper, Low Zinc Brass Castings for Dezincification Resistance Flush Accuracy Controlled by CID Technology No External Volume Adjustment to Ensure Water Conservation Diaphragm, Stop Seat and Vacuum Breaker molded from PERMEX Rubber Compound for Chloramine resistance