AC/DC Dual-Use: This fully automatic bathroom sink faucet features a smart sensor for contactless operation. For ease of use, this automatic sensor faucet can be powered by a 110V AC power plug or four AA batteries (sold separately). When the sensor indicator light flashes, it indicates low battery and the batteries need to be replaced Soft and Splash-free Water: Once activated, this hands-free bathroom sink faucet provides a continuous water flow for 60-90 seconds. The sensing distance is 5.9in, and the solenoid valve has been used over 300,000 times. The aerator spout ensures a gentle, splash-free water flow for a comfortable and pleasant user experience Brass Material: This sensor faucet is made of durable brass with a multi-layered chrome-plated finish. Its bright and beautiful appearance, combined with a smooth electroplated surface, is not only stylish and modern but also resistant to fading, maintaining its shine for a long time Temperature Control: This automatic bathroom faucet features a thermostat, allowing you to adjust the water temperature as needed to meet your ideal water temperature. Smart sensing for a more convenient life: Wash your hands and face without contact. Simply place your hands on the sensor area, and water will flow automatically. The water flow stops immediately when you remove your hands, ensuring hygienic and safe contactless handwashing Quick Installation Kit: The automatic sensor faucet kit includes a standard US-sized supply hose and connector. Installation is quick and easy; you can have a brand new automatic bathroom faucet in just minutes. Note: When connecting the inlet hose to the sensor valve or mixing valve, a sealing ring must be used; otherwise, leaks may occur Please contact us if you have any problems or suggestions visa Amazon,you will get reply in 24 hours.