Powered by AA batteries (batteries not included), can be used without a socket at the sink or in the event of a power failure, but requires maintenance and needs to be replaced when the batteries run out The sensor tap is set at a distance of 15 cm. Place your hand at this distance and the water will flow automatically. Remove your hand and the water will stop. When the handle is open, you can turn the tap on and off at will without touching the body of the bathroom tap, completing your water operation and simplifying its use. High Quality materials. The contactless operation of the bathroom taps prevents cross-contamination with bacteria and pathogens. Turning off the tap after washing your hands without touching the handle also helps children to turn off the tap when it is not in use, even if they cannot reach the switch. G1/2 connection size, complete with accessories, ready to install on arrival, the taps come complete with accessories, ready to install on receipt, easy and fast, enjoy the new home improvement experience!