It depends. The MRF-250 is the same as the most current version of the MRF-200 (It's been awhile since I checked, but I think it's Ver. 3.0 or higher). The earlier versions of the MRF-200 had different emitter output level and some lesser RF performance. If you have an MRF-200 that you got within the last two years or so, it's the same as the MRF-250.

Mike
www.SurfRemoteControl.com