Automatic Faucet Features: 1) Intelligent control, infrared sensing device 2) Power supply modes: battery, AC power, AC battery standby 3) Equipped with solenoid valve, stop valve and filter device 4) Solenoid valve has obtained patent in China 5) Low energy consumption, four alkaline batteries can make the solenoid valve work 200,000 times continuously 6) Light flashing in the inductive window reminds user to change batteries