Meross Smart Garage Door Opener (MSG200)

The Meross MSG200 makes an existing garage door opener smart: it retrofits onto hundreds of openers, one unit controls up to three doors, and it works with HomeKit (MSG200HK), Alexa, Google Home and SmartThings. It adds an audible alarm before closing, auto-close scheduling so the door is never left open overnight, and an external Wi-Fi antenna for garages at the edge of coverage.