KOHLER touchless wall-mount faucets with AC power options allow for long life, low maintenance functionality for years to come. Required for Purist¬Æ and Falling Water¬Æ wall-mount Touchless faucet trims. 0.5 gal/min (1.9 l/min) flow rate. On demand on and off.30 second maximum cycle time. Ideal for use with KOHLER Vessels. Low-Lead (SDWA) compliant Requires a plug-in AC power supply Brass construction.