We know that the dual power switch is actually a more perfect performance and a high degree of automation of the switch. Dual power switch is actually important in order to ensure supply continuity of electrical load device can be, so you can play a good role in the power supply, for some device is not powered off, and after a power outage many programs need to come, this is very time-consuming, and in such a big market environment automatic power transfer switch device can get a very wide range of applications.In the power conversion process will be closing surge and overvoltage phenomenon, load and power harm and even lead to failure of the standby power switch on dual power switch main application as well as important places do not allow critical electrical components of a power outage. Dual power supplies can be used as an actuator, while microcontroller core with an automatic controller and control mechanism with electromechanical interlock is a perfect performance, safety and reliability of the switch.