USAGE 1-Before turning on faucet adjustment switch must be in ' 0 ' position. 2-Open faucet and wait for 20-30 seconds before water start to flow. 3-Use three possible levels. 4-Temperature of water can be altered by changing amount of water possing through device. 5-After usage, bring adjustment knob to ' 0 ' position and then close the faucet. 6-Adjustment knob being in ' 0 ' position, water flows at it's normal temperature without consumption of electricity.