GEYA W2R Mini ATS 2P Automatic Transfer Switch Electrical Selector Switches Dual Power Switch Din Rail Type ATS 25A 40A 63A 100AAC110V AC220VBEST ATS QUALITY IN SS---SILVER CONTACT POINT & RED COPPER PARTS & STABLE RELAY CONTROLCity Power Generator General 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. Company Information