1. The faucet with infrared sensor allows you to wash your hands without touching it, avoiding cross-contamination by bacteria and ensuring hygiene. 2. When the handle is open you can open and close the faucet at will without touching the bathroom faucet body completing your water operation and simplifying use. 3. The infrared sensor automatically controls the faucet - simply place your hand under the faucet and the water will flow in seconds. The faucet can be closed without touching the handle after washing your hands. Comfortably clean. 4. Standard 1/2" connections. All common hot and cold water connection systems can be connected to our sensor faucets. Even if you're not a plumber or handyman, installation is child's play for users of all levels. 5. Operates on AA batteries (batteries not included) can be used without a socket at sink level or in the event of a power failure, but requires maintenance and replacement when batteries run out