I like this product because it covers a big area, I have it around 6 acres. However, as with all electronic machines these days, it could be made stronger. The ground spring on this one broke as soon as I pluged the ground wire in. It can still be used, but be aware when buying used units they do have a "life limit"
Originally bought the electric fence starter kit with wire and collar but had a lightning storm blow out the board. Bought this board to replace and it irks just as good and functions properly. Overall the sport dog electric fence system does a great job of keeping your pets in the yard and training them is not hard at all!
My old unit ran for...12 years? Not sure what happened, looks like the fuses inside blew and part of the board melted. We'd had some strong storms, I dunno. This plugged right in, hooked up my existing fence, everything working again no problem. I imagine at some point I'll have to change to a newer system, but as long as I can keep finding these I'll them. Price was fair from what I saw online and shipping was pretty quick. Would buy from again in future.