The optional PWRX™ Long-Life Battery System features advanced battery and electronics for a 10 year battery life to reduce the downtime and maintenance costs associated with changing batteries.  Optional PWRX Long-Life Battery System delivers 10 Year Battery Life Sensor in Spout Tip - Allows for clean, streamlined style. Helps reduce vandalism. Self-Adapting Sensor - Automatically sets the detection range by evaluating the surroundings Self-Cleaning Solenoid Reduces Maintenance - Wiper spring keeps diaphragm hole clean with every use Lead-Free - Faucet contains ≤ 0.25% total lead content by weight averageAll American Standard Selectronic Flush Valves are backed by unparalleled after-sales care, support and service. Learn more about the “Fast Attack” Service Team.