Update.. The instructions for the remote Gate Door opener read like gibberish. It took me a full day to figure it out. I work with offshore resources so I have some experience with documents written by people that don't speak English as their native language. I almost gave up and was about to trash it all. But then I figured it out.
I have now tested that it workes out in the field :-) So I'm ready to get this set up for my hog trap. The Solenoid was not what I was hoping for so that won't be used for this.
Now I just need to get a working release that is 12V DC capable. I have ordered a trunk release mechanism that I think will fill that requirement.
Once I get this all worked out and tested I'll post pictures and an update on how it works.
Oh, and I had to buy a 12v AGM battery that I got for $19.99 off of eBay.
Note that I am using a Spartan GoCam wireless game camera that I have had in the field for several months. I get pictures sent to me in less than a minute from when they are taken. I hope to use this when I see that there are hogs in my trap and only trigger the trap door when it is convenient for me to go get them since the trap is an hour drive from my home.
This is an example of when this would have been useful for me to have this remote trigger as they did not hit the manual one that night. I was awake and just waiting for the trap to trigger the next picture showed an empty trap and the hogs leaving.