Features | Solid Metal Construction For Durability And Reliability Fixture-Mount Design Includes Four 1.5 V Aa Alkaline Batteries Electronic Infrared Sensor With Tripoint (Tm) Technology Accurate Activation Intended Toilet Installations 1-1/2 inch Top Spud Coupling Connection 1.6 Gallons Per Flush Piston Valve Offers Reliable Flushing Performance Across Pressures Distance Is Factory Set - No Adjustments On-Site Chloramine Resistance On All Rubber Exposed To Waterway Manual Courtesy Button (Works Without Dc Power) 24 Hour Sentinel Flusho |