VARMINT ZAPPERS????

Do these work and are they adaptable to every feeder like the boss buck 12 volt?
What does the R and RD kit mean?

I bought one but have not hooked it up yet so I cannot tell you if it works well or not.

My feeder is a 12v setup, and therefore, I was going to use an additional 6v battery and solar panel for the Zapper unit (in addition to the 12v battery for the timer motor).

This is the first I have heard of the Varmint Zapper. Where can you get them from???

Every where,ebay,amazon,cabelas etc.

Here is one:

http://www.americanhunterfeeders.com/HTML/accessories.html

I used one this year and set my timer the same as always and had corn last at least 3 times longer, I can't believe how much must have been wasted before.And also I "tested" it and did that only once.