Crown ® OPTIMA ® SMOOTH Exposed, Battery Powered, Sensor Activated, Crown ® OPTIMA ® SMOOTH Water Closet Flushometers for floor mounted or wall hung top spud bowls with the following features:FlushometerFixed Volume Piston with Filtered O-ring Bypass ADA Compliant Metal Oscillating Non-Hold-Open Handle with Triple Seal Handle Packing 1 I.P.S. Screwdriver Bak-Chek Angle Stop Locking 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 1-1/2 Top Spud Sweat Solder Adapter with Cover Tube and Cast Wall Flange w/Set Screw High Copper, Low Zinc Brass Castings for Dezincification Resistance Valve designed to accept Low and Ultra-Low Consumption Pistons only Non-Hold-Open Handle, Fixed Metering Bypass and No External Volume Adjustment to Ensure Water Conservation Handle Packing, Main Seat, Stop Seat and Vacuum Breaker Molded from PERMEX Rubber Compound for Chloramine Resistance OPTIMA ® SMOOTH unitADA Compliant OPTIMA ® SMOOTH Battery Powered Infrared Sensor for automatic, “hands-free operation Sensor with Automatic Range Adjustment Chrome Plated Metal Sensor Housing Mechanical Manual Override Flush Handle Four (4) Size C Batteries included “Low Battery Flashing LED “User in View Flashing LED 25 to 80 psi Operating Range