RAZZAQ MART SHOP 1pc Multifunctional Dual-Flow Faucet Aerator, Hydroelectric LED Light Tap Attachment, 3 Color Temperature Settings, Universal Thread, No Battery Required, Water Flow Powered, Drinking Water Compatible

When the water temperature is less than or equal to 32 degrees freely switch to blue color. Green color is displayed when the water temperature is 33-41 degrees. When the water temperature in 42-45 degrees show red. When the water temperature exceeds 45 degrees, the red light flashes to remind, be careful to avoid scalding oh!