You need to write code.

Remote work for a programmer. You need to write a code (Arduino) that allows you to control several timers.
Tracking remote. It's got all the timers set up on it. It includes all stations and takes readings every time per second (status, state).
The remote displays pre-configured modes of operation (no more than 5 and no less than 3).
The distance of confident reception of the signal between the remote and the station should be at least 150 meters (the terrain is not open).