GEYA on-Grid Solar Power Automatic Transfer Switch Din Rail 2P 3P 4P 63A AC220V 110V ATS--ONLY PV System Power Transfer to City Power (SPECIAL USE)**PV&Inverter AC Output Power Stable Grid City Power**<br> General<br> GEYA W2R series Mini ATSDual Power Automatic Transfer Switch is PC Level,new developed micro household power transfer switch. When the normal city power is abnormal, the back up power works at once,no Interrupt,ensures the continuirty, reliability, and safety of power supply.NOTE: The rated voltage of the common and backup power supply must in range 85%-110%,and the current cannot be le than 5A, otherwise the coil will heat up or even spontaneously burn. If your city voltage not stable, please kindly addvoltage protectors in system.<br> Company Information