Im giving this facet a 0 out of 5.  If my husband didnt install it I would have definitely returned it. DO NOT buy this! 
It constantly  wont work. We figured out if any of the facet is damp from touching it with wet hands the sensor wont turn on and it wont work with the lever either. 
It only works 50 of the time. Were probably going to have to replace it again shortly.  A big waste of money.