Be Smart: Make your existing garage door smart. Remote and Voice Control, just tapping the app from anywhere or speaking to your Alexa, Google Assistant or SmartThings devices. To let in your family, guests or couriers through the garage door while you are cooking or not at home. No monthly fee or any other subscription fee Note: 2.4GHz WiFi network support onlyCompatibility Check: Before purchasing, please check if your garage door model is on the compatibility list. If your garage door needs accessories to solve compatibility issues. please send support team the information about your garage opener, we can ship the proper accessory separately for you, and make it worksMultiple Notification Modes: Stay alert by different notification modes such as garage door open/ close status, overtime notification and overnight notification to remind you close the garage door. And you can check the garage door open/ close operation records through the APPEasy to Install: Installation is much easier than you may think. Pls make sure your wifi strength is acceptable near your garage door. If you meet any issue about our product, simply contact support teamMore Precise and Stable: It comes with a high sensitivity wired sensor which monitors the status of garage door more accurate and the signal stays stable