1、Mount to raditor valve to allow individual temperature settings in each room of the heating system to maitain a constant room temperature. 2、Different temperature regulation to choose, helps you comfortably adjust the desired temperature. Self-adjustable control without external energy. 3、Fits to common radiator valve, easy to mount without having to drain any water or intervene in the heating system. 4、Frost-proof function keeps the valve flowing with fine hot water to prevent the water system frost from freezing when the ambient temperature is 0℃. 5、Energy-saving, suitable for room temperature control in different scenes such as home, offices, hotels, shopping malls, etc. Thermostatic radiator valve will be your best choice of temperature controlling for room temperature control, frost-proof function ensures the water flowing of the water system when the ambient temperature is 0℃. Features: Mount to raditor valve to allow individual temperature settings in each room of the heating system to maitain a constant room temperature. Different temperature regulation to choose, helps you comfortably adjust the desired temperature. Self-adjustable control without external energy. Fits to common radiator valve, easy to mount without having to drain any water or intervene in the heating system. Frost-proof function keeps the valve flowing with fine hot water to prevent the water system frost from freezing when the ambient temperature is 0℃. Energy-saving, suitable for room temperature control in different scenes such as home, offices, hotels, shopping malls, etc. Note: 1. Only operate the device in inside rooms and avoid the influence of moisture, dust and sunlight or external heat radiation. 2. In order to effectively open and close the valve, install the device horizontally. 3. Turn the knob to the "5" position when installing. Set the knob to the "5" position to avoid unwanted external force in summer. Specifications: Color: White Shell Material: ASA Plastic Maximum Working Pressure: 1.0MPa Maximum Differential Pressure: 0.1Mpa Temperature Range: 6-28℃ Defrost conservation: 6℃ Installation Size: M30 * 1.5 Item Size: Approx. 47 * 75mm / 1.9 * 3.0in (Dia. * H) Item Weight: 112g / 4.0oz Package Size: 9 * 5 * 5cm / 3.5 * 2.0 * 2.0in Package Weight: 124g / 4.4oz Package List: 1 * Thermostatic Radiator Valve 1 * User Manual (English) 1 * Thermostatic Radiator Valve 1 * User Manual (English)