This controller replaces the older style A-04 and A-06 controllers.
Running Board Remote Control PowerStep Replacement Controller For AMP Research Power Boards
On your existing controller there should be a white label and it will either have an "a" or "b". If your controller has the "A" this is the correct one for your application.
NOTICE:This PowerStep replacement controller is only suitable for AMP Research Power Boards. If you use other brands of power strips, this product will not be compatible. Please confirm your brand before purchasing. If you have any other questions before purchasing, you can contact me for free at any time, thank you!