Features Millisecond Switching for Uninterruptible Power Supply: Ensures seamless power transfer with millisecond speed, guaranteeing continuous power supply without any interruption. Immediate Backup Power Activation: Automatically switches to backup power supply in case of normal power failure, ensuring uninterrupted power and safeguarding against any downtime. Compact, Reliable, and Long-lasting: Possesses a compact structure with reliable transmission, easy installation and maintenance, and a long service life, ensuring uninterrupted power control. Construction: Constructed with high-quality ABS material, providing impact and scratch resistance, and ensuring environmental protection for long-lasting use. Stable Performance: Features a stable structure with excellent performance, ensuring reliable power transfer and a long service life. Features: 1、Millisecond switching, uninterruptible power supply. Adopt flame？retardant housing with guide rail installation 2、The backup power supply will work immediately when the normal power supply is abnormal, to ensure the continuity, reliability and safety of the power supply 3、This switch possess compact structure, reliable transmission, convenient installation and maintenance, and long service life 4、Made of excellent ABS material, possess impact resistance, scratch resistance, environmental protection 5、Automatic transfer switch possess stable structure, excellent performance and long service life Specification: Item Type: Automatic Transfer Switch Shell Material: ABS Rated Working Voltage: 400V AC Rated Frequency: 50Hz/60Hz Electrical Level: PC level Installation Method: DIN rail Package List: 1 x Switch 1 x User Manual Package List 1 x Switch 1 x User Manual