This model of 4P dual power transfer switch has the following features: 1. wide input voltage range: it can adapt to different voltage input requirements, including AC 100V, 220V and other different voltage levels. 2. Dual power supply: each output terminal can be independently connected to the power supply to realize the dual power supply function; it can also be used to realize the switching between the two power supplies through the switching circuit. 3. High efficiency: adopting advanced circuit design and material selection, it can effectively reduce energy consumption and noise generation, and improve the efficiency and stability of the power converter. 4. multiple protection measures: with overload, short circuit, leakage and other safety protection functions to ensure the safety of users. 5. Simple and generous appearance: the product appearance design is simple and beautiful, in line with modern home decorating style, easy to install and use.