Works with included power supply. Now you can get one unit and control a 4 car garage using one app. Just connect the wires to your separate garage opener.This unit is for people that have 4 or less car garage. Can be shared with multiple users. Also can be used with your Alexa, Google home or Google nest. Just plug unit and connect to your garage opener with 2 wires from each opener. Your original switches still works. Will not work with any Security+ 2.0 openers or any other system requires you to press a learn button to pair your wired wall opener. Can work with iPhone or android devices. Units for 1 or 2 car garages are available in my other auctions. The item "4 Car WiFi Garage Door Opener. App" is in sale since Friday, September 6, 2019. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Garage Doors & Openers\Garage Door Remotes". The seller is "gldf111" and is located in Hollis, New York. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Aruba, Belize, Grenada, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Bermuda, Bolivia, Ecuador, Egypt, Guadeloupe, Iceland, Cambodia, Cayman islands, Luxembourg, Monaco, Nicaragua, Oman, Peru, Paraguay, Viet nam, Uruguay.