Two... and it has better range than the original key. I use the dedicated remote start fob to start my car from the second floor of my office building. The original keys don't work through the thick building glass and I'm parked about 70 yards away.
I was looking at the factory system and I think it is just a rebranded compustar system. I bought an aftermarket unit and installed it so I could add the drone cell phone system if you need a cheap extra remote.