✅Fully Automatic — This spray dispenser has a built-in intelligent infrared motion sensor that automates the spray process: 0.8-1.6 ml per interaction. ✅Large Capacity — The capacious 1000ml refillable canister gives on average 833 spray interactions ✅Easy Installation- The SoPure automatic hand sanitizer dispenser can be easily installed on the wall or stand with mount screws. It is powered by 4 AA batteries (not included).