Features Dual Power Supply Compatibility: Ensures compatibility with urban power supply and alternator backup, ideal for home, factory, and office use. Automatic Mode Switching: Automatically switches between power supplies, prioritizing single power supply and seamlessly transitioning during power abnormalities. Continuity and Safety Assurance: Immediate activation of backup power during power supply disruptions, ensuring uninterrupted and reliable power supply. Flame Retardant PC Shell: Constructed with flame retardant PC material for excellent insulation, high temperature and aging resistance, ensuring safety and reliability. Easy Installation and Maintenance: Compact and well-structured design for convenient installation and maintenance, providing a hassle-liberate user experience. Features: 1、[for Dual Power Supply] Public power supply must be urban power supply, and the backup power supply must be the alternator. 2、[Automatic Mode] When only one power supply is working, the switch will automatically switch to that one. When public and standby power supply are provided at the same time, public power supply is preferred. 3、[Ensure Continuity] When the normal power supply is abnormal, the standby power supply works immediately, thus ensuring the continuity, reliability and safety of the power supply. 4、[PC Shell] Adopt flame retardant PC material, with good insulation, high temperature resistance, aging resistance, safe and reliable. 5、[Convenient Installation] The transfer switch is reasonable in structure, small in size, convenient for installation and maintenance. Specification: Item Type: Dual Power Automatic Switch Material: PC Rated Working Voltage: 220 V AC Rated Voltage (Ue): AC 400V Rated Insulation Voltage (Ui): AC 690V Control Voltage: AC 220 V Life: Electronic: 2000 times, mechanical: 5000 times Auxiliary Circuit: AC220 V AC110V 50 60Hz Impulse Resistance Voltage: 8KV Mode: Automatic and manual Number of Poles: 2P Package List: 1 x Dual Power Automatic Switch 1 x User Manual Package List 1 x Dual Power Automatic Switch 1 x User Manual