Tips for Operating Your Touch2O Faucet Operation is simple! With the handle in the “on” position, tap anywhere on the spout, base or handle. The faucet is able to tell the difference between a touch and a grab. So it won’t turn on and off when you don’t want it to. Use the handle to control temperature and volume for both manual and electronic operation. Whether you grab the handle or tap it, water will flow. Once the water is flowing, a tap will turn it off. LED light changes from blue to red as water temperature changes.