Question about TP-Link Deco M4 AC1200 Dualband WLAN Mesh 3-pack

I use it with the router (Technicolor) from GGA Maur and it works perfectly. The set-up was super easy The coverage and speed are great. We no longer have any WLAN interruptions, which is extremely helpful, especially when calling WIFI. What I also like is that you are informed about every new WLAN login if you want to be.