I contacted the Donmaster company, ordered the services of an electrician, it was necessary to fix a malfunction in the wiring in the kitchen. The master arrived quickly, repaired the cables, and replaced part of the system. It's all right.
It was necessary to fix the wiring problem in the living room. Before that, they called a master from another company - it didn't help, it stopped working almost immediately. We applied here - the master arrived quickly, did his job very well, nothing went wrong.