True Mechanical Override Flush Button;Four (4) size C batteries included;“Low Battery” Flashing LED;“User in View” Flashing LED;72-Hour Sentinel Flush;Sweat solder adapter with cover tube and cast wall flange with set screw;No External Volume Adjustment to Ensure Water Conservation;Includes adhesive backed metal wallplate with non-potable water warning;Features purple wall flange, diaphragm guide, bonnet and inner cover to communicate reclaimed water use;Infrared Sensor with Multiple-focused, Lobular Sensing Fields for high and low target detection;1” I.P.S. Screwdriver Bak-Chek Angle Stop with Free Spinning Vandal Resistant Stop Cap;Diaphragm, Stop Seat and Vacuum Breaker to be molded from PERMEX rubber compound for Chloramine resistance