Excellent salt water and chemical corrosion resistance LONG LONG DURABILITY & SAFETY GUARANTEED: This replacement kit offers superior resistance to salt water and chemical staining for extended life. At the same time, we strongly recommend that installation or replacement be performed by a certified technician to ensure safety and correct operation of the equipment. Improved heating efficiency: The internal design ensures that the speed of water flow in all pipes is consistent, thereby achieving faster heating speed. This optimized design helps you enjoy warmth while saving energy. Environmental protection and energy saving: Using advanced technology to reduce the running time of the pump can save up to 18% of energy consumption. This product has low nitrogen oxide emissions and meets the most stringent clean air quality standards, protecting the environment while bringing efficient energy use. Retrofitability and Ease of Operation: The matching universal coupling is easy to install and accommodates the recommended larger pipe sizes to optimize water flow and heating efficiency. Professional Maintenance Recommendations: To ensure optimal performance of your heater and extend the life of your equipment, regular professional maintenance is recommended. Our kits feature key replacement parts to help you handle common repair needs with ease. Material: plastic colour: black Package Contents: 1 x Keypad Assembly