Hello! This is my first post on Elektroda, as I have been coping on my own so far 
I am asking you to recommend a solution to the following problem. My wife and I are renting a flat on a so-called short-term basis. We don't generally have problems with guests, but they notoriously leave the lights on or, worse, the air conditioning. I want to install a system similar to a hotel's, that is, combined with a key fob (key) (as in the attached photo) or with a magnetic card. The issue is that this magnetic/proximity switch, as used in hotels, should be at the door, and unfortunately the switchboard is deep inside the flat. Is there any way to remotely connect such a device at the door to the switch in the switchboard? Ideally, this device at the door should run on a battery so that there is no need to redo the installation.
I am asking you to recommend a solution to the following problem. My wife and I are renting a flat on a so-called short-term basis. We don't generally have problems with guests, but they notoriously leave the lights on or, worse, the air conditioning. I want to install a system similar to a hotel's, that is, combined with a key fob (key) (as in the attached photo) or with a magnetic card. The issue is that this magnetic/proximity switch, as used in hotels, should be at the door, and unfortunately the switchboard is deep inside the flat. Is there any way to remotely connect such a device at the door to the switch in the switchboard? Ideally, this device at the door should run on a battery so that there is no need to redo the installation.
