@Lise Concrete walls are WiFi signal killer. No matter which Deco or other brand WiFi mesh you'll try, they all operate on same physical principles. You will need to consider the following options to...

@Cavey57 There are three common options to deliver wired link to remote distance: 1. Ethernet cable; 2. TV cable (coax); 3. Powerline adapters. In the order from best to most problematic. If you have...

@Shaun_TheDiver There could be less expensive Deco models, but they might not have strong enough WiFi signal to penetrate walls. It would make sense to try some sort of wired link as close to...

@Shaun_TheDiver Can you lay Ethernet cable from one of XE75s up to the where camera is? Yes, you said camera is wireless, but with Ethernet cable connected on one end to Deco unit and another end...

@Shazza17 When you run Deco mesh in Access Point, it is recommended to turn off main router WiFi with its SSID. When you do that, your question will have an obvious answer as there will be only one...

@shicielo Without connection preference feature all you can do is move Main Deco and Deco 2 as far away from each other as possible. When signal between them becomes very weak or they can't connect...