Features Fast Switching: This dual power electrical selector switch allows fast switching of the backup power supply to work immediately in the event of a power supply abnormality. Millisecond switching ensures continuous power supply as well as the reliability and safety of the power supply. Dual Workstation Design: This dual power standby generator changeover switch is a PC grade infrequent changeover switch with a dual workstation design, with A as the common power source and B as the backup power source, for use in 50‑60 Hz AC systems. Excellent PC Material: This dual power transfer switch is made of excellent PC material, which is sturdy and abrasion resistant, not easy to be damaged, with good insulation, high temperature resistance, anti aging, safe and reliable, and the silver contacts can greatly improve the conductivity and service life. Easy To Install: This dual electronic power circuit breaker is a miniature household power switch that is mainly used to detect whether the main power supply or backup power supply is normal or not, and its small size and light weight greatly simplify the installation. Wide Application: This dual power automatic transfer switch has a wide range of applications and is suitable for use in emergency power supply systems for 50 or 60 Hz AC circuits in a wide variety of applications where continuous power outages are not permitted. Specification: Item Type: Dual Power Automatic Transfer Switch Model: TOATS-2 Material: PC Rated Current: 63A Frequency: 50, 60Hz How to Use: Follow the instructions manual after taking out the dual power automatic transfer switch. PackageList: 1 x Dual Power Automatic Transfer Switch 1 x Manual Package List 1 x Dual Power Automatic Transfer Switch 1 x Manual