Sloan's Optima Lino Faucets Sensor-Operated, Electronic Hand Washing Faucet for Pre-Tempered or Hot/Cold Water Supply Lines. Chrome Plated Cast Brass Body Modular one-piece construction Double infrared sensors with automatic setting feature and microprocessor Water supply connection with flexible high-pressure hose and strainer Magnetic solenoid valve Concealed components above deck Low battery indicator Includes 6-volt Lithium CR-P2 commercial battery or 6-volt DC plug-in transformer Appropriate mounting hardware included