Originally bought this product for my son’s bathroom for the ease of him washing his hands on his own and the installation took about 2 hours. The top of the sink faucet was too wide and needed to be trimmed to fit a standard sink basin. The first one installed perfect. The second is defective. Water doesn’t turn on when hand is placed under. Whenever it does decide to randomly come on the water runs too long. Will update review based on return process for defect in ve product