Dual Power Generator Changeover Switch 50Hz/60Hz (2P 63A Blue), 110V Dual Power Product Details ?Application automatic transfer switch device:Line Voltage: AC110V;Line Current: 6A-63A;Operating Frequency: 50HZ/60HZ; insulation Voltage: AC110V ?Conversion Time: 2S or so;Conversion Mode: self cast; Display Function: Indicator light display;Installation Dimension: 128mm*122mm hole: M6 ?When one power goes wrong (only test normal Phase A voltage and reserve Phase A voltage, only test loss voltage or loss phase),it will automatic connect one or several load circuits from one power to the other power automatically, to ensure normal power supply of load circuits. ?Complete protection function:This switch support variety protection function, including short circuit, overload, lack of phase, under voltage protection. ?Easy installation:Reasonable structure, small size, equipped with protective cover, power supply is easy to install and reliable. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.