I have two traps with a remote gate release on each of them. I designed the system myself because the commercial ones that were available at the time either locked you into using their cameras or they had some proprietary system that could only be used with their gates making it very expensive. My system uses off the shelf components and a little redneck ingenuity to get the job done at a third of the cost. The original controllers were on the 2G AT&T network. At the first of the year, AT&T has started turning off the 2G service which made my traps stop working. I recently upgraded the controller to a 3G\4G compatible controller and recorded a video of our large trap and how the system works. Right now, the trap costs me $30/month to run but we trap and sell hogs to state approved holding facilities so as long as we're trapping hogs we can offset that cost by selling them. I'm also working on a long range wireless system (up to 2.5 miles) that would allow me to activate another trap with the same controller cutting costs in half.