Feature: Simply & Convenience operation: Sensor powered by 4pcs AA batteries; when sensor is activated, automatically supplies water as soon as hands are within sensing range, and stops when you move away your hands. Water-saving: Water efficient faucet reduces overall water usage without sacrificing water pressure. Energy-saving: Battery shall last approximately 300 times/day for two year. Hygiene: Touchless design provides hands-free and germ-free operation. Durable: Made of copper alloy material, or reliability and long lasting performance. Speciation: Installation type: erect Material: Copper alloy Seat diameter: 40 Working temperature: 0-65 Nominal pressure: 0.05-0.8 Inlet and outlet pipe diameter: 1/2 Applicable type: basin faucet Structure form: single joint Opening method: Inductive Faucet Size: 16.3 x 6.5 x13cm / 6.42 x 2.56 x 5.12 inch (appr.) Control box: 12.5 x10.8 x7.5cm / 4.92 x 4.25 x 2.95 inch (appr.) Package Included: 1 x Automatic Sensor Faucet 1 x Control box 1 x Hose 1 x Screw package 1 x Three-way switch 1 x English manual 1Simply & Convenience operation: Sensor powered by 4pcs AA batteries; when sensor is activated, automatically supplies water as soon as hands are within sensing range, and stops when you move away your hands. 2Water-saving: Water efficient faucet reduces overall water usage without sacrificing water pressure. 3Energy-saving: Battery shall last approximately 300 times/day for two year. 4Hygiene: Touchless design provides hands-free and germ-free operation. 5Durable: Made of copper alloy material, or reliability and long lasting performance.