Check the listing for details. Jotta W2R-2P/3P/4P 100A 220V Mini ATS Automatic Transfer Switch 100 amp Elect.... Color: 3P 100A 220V, Condition: New. Listed at 67.47 USD. Brand New Jotta W2R-2P/3P/4P 100A 220V Mini ATS Automatic Transfer Switch 100 amp Electrical Selector Switches Dual Power Switch (3P 100A 220V) Manufacturer model: W2R Operating Voltage:220V. Please ensure your home voltage is stable,because the working voltage can not lower than 190V,or the ATS will not work.Working principle:when the main power off, it can automatic transfer to generator (generator should be on),when the main power is restored,it will transfer to main powerThis Type ATS is for City Electricity or generator,please do not use an inverter as a backup power source.This ATS is PC Type,which means It does not have overload and short circuit protection functions,its executive component is an isolation switch,its driving component is an electromagnetic coil, with fast transfer speedBuilt with Arc extinguishing at the contacts. Description Shipping and Handling Please allow 5-7 business days for the package to arrive, regardless of buyer location within the US. We will provide an online tracking number to you once the item has been shipped. It may take a few business days for our automated system to process the tracking number onto eBay. However, this will not affect the shipping times. Return Policy All our products are brand new and sealed. All items qualify for returns within 30 days of receipt. Feedback We take our reputation seriously. If you have any questions or concerns, please contact us and we will respond back to your message within 24 hours.