Review on Refoss Smart Wi-Fi Garage Door Opener with APP Control, Alexa and Google Assistant Compatibility, No Hub Required by Gus Gutierrez

I installed this on my Chamberlain HBW7675 with a yellow learn button that needed an additional accessory. If you have a model that requires accessories, please be patient and visit the Meross website, contact customer service by email and tell them your model number and learn the color of the button . For me it was yellow. The support team is very responsive and professional. They will mail you the supplies you need and provide you with tracking information. I would also like to request that they also email you instructions on how to install the accessories. While waiting for my accessories to arrive, I installed the sensors according to Refoss instructions and connected the control box to my WIFI. If you have a device that requires an accessory, ignore the process of connecting the signal control box to your opener. When you receive your accessory you will have four buttons, see the image I provided, depending on the color of your learn button you will see the wires coming from the learn button color location. Program an accessory to the opener by pressing the learn button on the opener and pressing the accessory button next to the wire exit. This will program the accessory onto your knife. Now pay attention to the provided picture and connect the signal control box with the accessories, complete the installation and check the device. To make it work with Alexa, follow the instructions on the Meross website. You need to create an account with Meross and also download 2 apps from Alexa app, Meross and Smart Meross. Once set up, you can control your voice, rename and control the opener. This is a great product that will make your knife smart and save you money on a new smart knife. Hope that helps.