Touch works by substituting the sink faucet

Faucet features touch the water and lock the frame can be detected by the sensor out of range, the water has been automatically locked. If you put your hands in the sink in the capital came back to stop the water, unlike the way it still comes out if you touch the other's point.

The sensor works as shown in the pictures were located at the top of the faucet. During the dirty dishes by hand crank when the water seems more convenient.