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. Adjustable Spout Reach - Adjusts from 6" - 9" to prevent splashing when installed with different size sinks. 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 average.