The modern chrome infra-red sensor tap has electronic infra-red sensors that activate only when hands are placed underneath the spout of the tap when the hands are removed from the sensor's range the water will automatically stop. A fantastic easy-to-use, flawless hygiene solution. Easy to install; plugged into a 220V outlet (UK standard power cord is included) and battery operated Nes Home Chrome Auto Sensor Automatic Infrared Tap Basin Sink Hygienic Mixer Bathroom in Silver