Constant Temperature Principle - The thermostatic faucet detects sensitive changes in water temperature through the built-in thermostatic cartridge and automatically adjusts the mixing ratio of hot and cold water according to the changes in a short time in order to achieve constant water temperature. Made of high quality brass - The thermostatic mixer tap is made with high quality brass body + zinc alloy handle at both ends + chrome surface which is heat resistant, corrosion-resistant, easy to clean and maintain, with a long service life. Safety: The thermostatic mixer is equipped with a safety lock, so if you want to set the temperature higher than 38C, you must first press the safety button before you can continue to turn the handle. Comfortable and energy efficient: press the 38C button to adjust the water temperature quickly idely and consistently at a pleasant temperature of 38C, avoiding repeated temperature changes to save water. Water flow mode - Threaded water outlet connection complies with European standard G. Plug in the hand shower to enjoy the shower.