The AutoFaucet® is a user-friendly. - Automatic faucet that utilizes Surround Sensor™ Technology to dispense water only when needed. Touch-free activation helps reduce cross-contamination on user's hands. Patented Dry Cam-Gear Technology controls the water flow, ensures worryfree operation and eliminates solenoid valves to prevent costly repairs. Long battery life that lasts more than 3 years or 400,000 handwashing cycles (Four D batteries included). Kit 1 Includes: spout and valve control module Kit 2 Includes: spout, valve control module, and main supply hose (1/2” pipe x 3/8” comp. x 12” length) Kit 3 Includes: spout, valve control module, mixing valve, and hot/cold supply hoses (3/8” comp. x 3/8” comp. x 12” length) Kit 4 Includes: spout, valve control module, thermostatic mixing valve, and hot/cold supply hoses (3/8” comp. x 3/8” comp. x 12” length)