Optima Plus Battery Powered, Fiber Optic, Sensor Activated, Hand Washing Faucet Sloan Optima ® Faucets are specified more than any other brand of electronic faucet. Optima Faucets are crafted in the tradition of Sloan Quality with advanced, state-of-the-art electronics. Optima Faucets are "hands free" and are engineered and built by Sloan, the leader in electronic plumbing applications. Sloan has designed and installed more electronic plumbing installations than any other single manufacturer. The reason is that Sloan pioneered the use of electronics in the restroom. Our knowledge-base of applications has provided us with the foundation to solve the most complex hygiene and plumbing problems. ¢ Splash-proof Circuit Control Module ¢ Fiber Optic, Automatic, Self-adaptive Sensing ¢ Audible Tone Low Battery Indicator ¢ Serviceable Filtered Solenoid Valve ¢ Chrome Plated Metal Throat Plate ¢ Bak-Chek Tee for Hot/Cold Supply ¢ Trim Plate with Anti-Rotation Pin (specify 4lp or 8l.) ¢ Vandal Resistant Spray Head with Pressure Compensating Flow Control ¢ Polypropylene Optic Cable Protection ¢ Includes four (4) C-cell Alkaline Batteries