Installation was similar to all other TreatLife products, I used the Smart Life app. Once you're familiar with their products, you don't need manuals to do new stuff, really. The Alexa app recognizes all new products installed and adds them automatically, which is very cool. I use Echo and Echo Dots throughout my house and shop. Remember while using your phone app (SmartLife) to be on the same 2.4 ghz WiFi network as all your devices (I have two different networks at my house).
Dimmer works great, no flicker with LED bulbs, although there's settings in the app that supposedly provide more power control options to eliminate flicker, I didn't need them so I can't speak to them...cool feature to include though.
I'm sure I'll find more things to "smartify" soon, it's been fun. I'm glad I started out by chance with TreatLife products, it's been worth it to me to stick to one system or brand.