With all 2.4 systems, the reciever will only respond to the transmitter that it's bound to.

Whats unique with Spektrum (and this doesn't apply to the modules, just the native system) is the reciever takes that one step farther and only responds to the correct transmitter AND correct model memory selection.


Its the same way garage door openers and remote locks on cars have been working for years, they all use the same frequency band but you make the door opener (or car) memorize the code from the controller so it only responds to that one.