Infrared sensor operated 
Sensor range auto-adjust 
3 Batteries  AAA ,Powered 1 year ,  Can be changed easily  
Avoid the second infection, Prevents cross- contamination and spreading  the germ  through touching the tap handles. 
Guard against theft function 
As well as a water saving product, It is an assistive  technology solution for people with disability. 
Fast and easy installation 
Fit  most  of  standard faucet