Zareba 200-Mile AC-Powered Low Impedance Electric Fence Charger - EAC200M-Z - Contain Cattle, Horses, Pigs, Sheep - Keep Out Predators

If you want the horses to stay in and away from the fence this does the job well. They quickly develop a great respect for the fence with this unit. Build a little roof over it if you live in rainy or snowy climates and can't install it indoors. This is the best fencer unit I have owned to date, highly effective.

It works great, keeps my horses where they belong, was strong enough to do our entire 10 acre pasture. Easy to set up. If you need something strong to run a lot of fence this little baby is a great choice

Works great except that the included lightning protector cuts fence voltage from 15.6 kilovolts to 10.6. That's fully 1/3 of it's power restricted by the protector.

I live in Alaska and we have a lot of bears in my area. I have horses and chickens, both of which can be bear magnets. I had a lower joule box I used for years that I wasn’t really comfortable with. I got this box and holy cow! Don’t touch the wire!! It is very powerful and keeps the neighbor’s dogs away (I heard him Yelp when he accidentally touched the wire) and I would think the bears definitely think twice about coming around here.

keeps cows in and bear out

This thing sucks I hooked it up and can hold the wire , I have 4. 8 foot ground rods on it and nothing barely works just a tingle no way it will stop a cow the only reason I ga e a one star is you can’t do 0

Makes your fence "sing" with each bolt of lighting this thing sends out. First one I had died after 2 days. Returned, replaced, all good.

Good power it keeps my sheep where they are supposed to be.