1.Water come out healthfully: water come out once our hand in the exact range, and stop once our hand away. No need to touch faucet, which avoid bacterial infection.
2.No need any outer connected AC power or batteries. Avoiding the trouble of changing batteries.
3.Sensor distance adjustment: adjusted by micro-computer 
  
Technique parameter 
1.Power: self-generating electricity device 
2.Sensor distance adjustment: adjusted by micro-computer ,according to different occasions.
3.Working temperature: 0.1-60℃
4.Working water pressure: 0.05-0.8Mpa
5.Inlet pipe thread: G1/2