Two Cycloop devices - one Key Fob?

You can pair one Key Fob to as many Cycloop devices as you like without any issues. 

However keep in mind one Key Fob can only connect to one Cycloop at a time, so if you have 2 Cycloop devices/bicycles, and you lend one bicycle to a friend while you ride the other one - one of the Cycloops will constantly be in alarm while the other will not.