Build to Last: High-quality plastic and red copper make the product have strong electrical conductivity, solid, and durable, so it can keep practical without frequent replacement. Good Performance: This switch can be used to detect whether the power supply is normal, achieve the conversion between normal power supply and standby power supply in a short time(less than equal 2s), and ensure your normal use in the event of a power failure. Safety Guard: The protective functions such as overvoltage, overcurrent, overheating, and short circuits can effectively protect safety during use, so you can use it with confidence. Convenient and Simple: Two operating modes (automatic+manual), clear prompts, four indicator lights, ensure that you can easily use it. Flexible Installation: This product can be installed horizontally or vertically, fully meeting your needs. Effortless Cleaning: The smooth surface, the small size of 5.91x5.31inc, and the 2.2lbs weight make it easy for you to clean the residue with a towel. Ideal Gift: With good performance, this product is an ideal gift for family, friends, and lovers so that they can also enjoy a more convenient life. Solid Back Plate: The enlarged back plate with 4 mounting holes increases the contact area with the wall, making it more secure to hang on the wall. Round Corners: Compared with traditional square corners, an arc design without a burr can better care for your skin. Application: It is suitable for AC 50HZ/60HZ,rated voltage 110V, rated current below 63A (2-wire)- live wire,a neutral wire,dual power grid,etc.The normal power source is municipal power, while the standby power source can be solar power generation,street lamp power, battery power,or any one of the AC 110V power sources.It can be widely used in homes, hotels, schools, restaurants, banks, hospitals, shopping malls,and other places, and is suita