MyQ Garage Universal Smartphone Garage Door Control enables you to monitor and control your garage door from your smartphone or tablet ; Receive Alerts - Alerts are sent when garage door opens and closes ; Free App with no monthly or ongoing service fees ; Works in conjunction with your home's Wi-Fi ; Easy Installation - Installs in minutes without hardwiring to your garage door opener ; Compatible with most major brands of garage door openers manufactured after 1993 including Chamberlain, Craftsman, Genie, LiftMaster, Linear and Overhead Door ; 1 Year Warranty |Includes: Wi-Fi Hub, door sensor, mounting bracket, power cord and instructions for free app download