Sensor Activated, Electronic, 4 inch Centerset Hand Washing Faucet for Tempered or Hot/Cold Water Operation. Battery Powered with Battery Backup with Below Deck Mechanical Mixing Valve. Adjustable Infrared Sensor Range. Aerator Spray Head. Bak-Chek Tee for Hot Cold Supply. Includes Four 4 AA-size Batteries. Splash-proof Circuit Control Module. Filtered Solenoid Valve with serviceable Strainer Filter. Below Deck Mechanical Mixing Valve. 24 Long Flex Hose. Includes appropriate Mounting Hardware. 36 Long Sensor Cable.