Convenience just got more convenient with this Lahara Single Hole 1-Handle Touch2O.xt Technology Bathroom Faucet in Chrome. TempSense Technology measures the water temperature in the faucet. The LED light at the base of the faucet changes from blue to magenta to red depending upon the temperature of the water to let you know when the water temperature is right for you. A/C adapter EP73954 is available to purchase separately as an option to avoid changing batteries. Even if the adapter is used, batteries are still recommended as a back-up if power goes out. Once power is restored, the solenoid valve will automatically revert back to using A/C power. With Touch2O Technology, it doesn't matter if you have two full hands or ten messy fingers. Tap anywhere on the spout or handle of the faucet with your hand, wrist, or forearm to start and stop the flow of water. Delta's exclusive DIAMOND Seal Technology uses a valve with a tough diamond coating. InnoFlex PEX waterways keep water inside the faucet out of contact with potential metal contaminants. Delta is committed to supporting water conservation around the globe and has been recognized as WaterSense Manufacturer Partner of the Year in 2011, 2013, and 2014.