Hi Fluke,
Above is the link to the exact system and how it works.
Please note that the video is upside down in the clip, the hide my number plate covers drop from the top not goes up from the bottom but the fitment will work both ways so its the users choice.
If you look on the image or the video you will see that these can be controlled from the remote control or from the control unit that ideally you need to please in hands reach deivers side.
An LED that lights up indicates that a hide my number plate has been activated. You can activate them individually or together. An LED will light up on the main control unit and on a seperate LED indicator that you can put on the dash for example.
Hope it made sence, please let me know if you have any more questions.
Thanks