OHD Anywhere is a smartphone-enabled garage door controller activated from anywhere via the home's Wi-Fi connection. This connection eases the worry of "did I close my garage door", as it controls and monitors the status (opened or closed) of your garage door from anywhere. OHD Anywhere is installed easily and can be programmed for customization in minutes via a free, downloaded application. * OHD Anywhere controls and monitors your garage door opener with compatible smartphones, serving as an on-line, remote connection to your opener * Connection provides extra peace of mind via the monitor which indicates if the door is opened or closed * Smartphone-enabled garage door controller includes a door control module plus a door position sensor (operates 1 door) * OHD Anywhere controls up to 3 garage doors with additional sensors sold separately * Works with most garage door openers manufactured since 1993 * For simple installation, download the free application and follow the instructions Requires purchase and installation of Door Control Monitor system; go here for further information: http://www.overheaddoor.com/garage-door-opener-app For "how-to" assistance with setup and installation, view the video tutorial here: https://www.youtube.com/watch?v=m_lhrp6oHRc