1、Reasonable structure, small size, beautiful appearance, equipped with protective cover, power supply more safe and reliable. 2、With short circuit, overload, lack of phase, under voltage protected function. 3、Noise-free operation, energy-saving, convenient installation, simple operation, reliable performance. 4、Equipped with protective cover, power supply more safe and reliable. 5、Double power automatic switching switch is to switch the two power supply, divided into the common power supply and standby power supply. When the common power supply is cut off, the backup power supply will be restored to the common power supply after t Features: Reasonable structure, small size, beautiful appearance, long service life. With short circuit, overload, lack of phase, under voltage protected function. Noise-free operation, energy-saving, convenient installation, simple operation, reliable performance. Equipped with protective cover, power supply more safe and reliable. Double power automatic switching switch is to switch the two power supply, divided into the common power supply and standby power supply. When the common power supply is cut off, the backup power supply will be restored to the common power supply after the common power is called. In special cases, automatic switching is not required, and manual switching can also be set by yourself. Specification: Model: NDQ1-63/2P Rated working voltage: 110V Rated current: 63 (A) Size: 16 * 13.5 * 12cm / 6.3 * 5.3 * 4.7in Weight: 1674g/59oz Package List: 1 x Dual Power Automatic Transfer Switch