rfpwnon Metasploit Module: https://www.rapid7.com/db/modules/post/hardware/rftransceiver/rfpwnon

Above is a video demo of a Linear Delta-3 garage door receiver being brute forced using the  rfpwnon.py script.  This receiver has 8 dip switches and it takes around 2 minutes to run through all possible permutations of the code when being brute forced.  This garage door is less secure than the remote control light that is shown later in the article.

Code is available at: https://github.com/exploitagency/github-rfpwnon