... tapsFeatures:Solid Brass ConstructionSingle-hole MountingSensor type : Active Electronic infrared SensorPower:DC6V(four 5#-alkaline Battery) / AC Adapter OptionalBattery ... , airports, government buildings, and office buildingsIntroduction:Fully automatic infrared electric induction products.1 autopen and auto shut off2 only ... range, faucet will be auto stopping Electronic Infrared Automatic Faucet