Automatic Infrared Sensor Faucet's features: 1. Intelligentize: Water is automatically released from the faucet when hands enter the sensor area and sensor will shut off once hands are pulled away. 2. Hygiene: The No-Touch advantage eliminates a major source of cross-contamination. 3. Anti-impurity: Our patented hydraulic solenoid valve can prevent debris in water clogging the faucet and therefore increase the durability of our products. 4. Electricity-saving: Uses only 4 pieces of alkaline batteries and lasts for 18 months. 5. Water-saving: Water will be shut off after discharging continuously for 30 seconds. Specification: Material: Brass Chrome Plated Working Voltage: 1). DC4.5-6.5V: Use 4pcs "AA" alkaline batteries 2). AC type: 220V or 110V. 3). Self-powered type: use a Mini Hydro-generator as main power, need no anybattery or AC power. Detection range:50-300mm Ambient temperature range:1-55 Centigrade Degree Ambient humidity range:≤100%RH Inlet diameter of solenoid valve:G1/2" Discharge Volume:0.3Mpa <0.15L/S (Adjustable) Water pressure range:0.03-0.9Mpa Power: Static State :0.3Mw; Dynamic State: 30Mw (DC) Static State: 3W; Dynamic State: 6W (AC)