Heavy-Duty Touch-Free Faucet; Engineered for demanding commercial restrooms with reinforced construction, vandal-resistant components, ADA compliance, low-flow efficiency, fast-response sensor activation, auto shut-off, and AC/DC or hybrid power compatibility. Suitable for either heavy-traffic or commercial bathrooms the faucet will automatically operate with ease-no need to touch faucet handles which reduces the transfer of germs and bacteria by a substantial percentage. This cool fixture fits all US standard plumbing systems making its installation quite easy. It operates on four AA alkaline batteries, which are not included and gives reliable performance without the hassle of hardwiring. With the water pressure range from 0.5 to 7.0 KGS/cm it provides optimum flow rates apt for everyday use. Not only does this faucet reduce contact and thus improve hygiene but it can also save a great amount of water by not allowing unnecessary or unattended flow. This faucet is an intelligent choice for users who balance both cleanliness and conservation. Enjoy peace of mind, knowing you are making a responsible choice for your space.