Self-Cleaning Piston with integral wiper spring significantly reduces clogging and maintenance Selectronic Proximity System with universal sensor provides hygienic, hands free operation State-of-the-Art Electronics prevent ghost flushing Dezincification Resistant semi-red brass alloy Fully Mechanical Manual Override Button can flush the valve without power Fail-Safe: Valve automatically closes upon loss of power or water pressure and does not need to be reset Adjustable Sanitary Flush cleans the fixture & maintains the trap seal. Chemical resistant EPDM Seals for extended life Adjustable tailpiece for rough-in flexibility Can be installed left or right handed All exposed parts are chrome-plated