Amazon.ca:Customer reviews: Wireless Electric Dog Fence Pet Containment System, Safe Effective Vibrate/Shock Dog Fence, Adjustable Range Up to 900 Feet & Display Distance, Rechargeable Waterproof Collar Receiver (2 Dog System)
This product is crap; tried multiple times, but couldn't get it to work. Also, the manual that comes with the product has an overwhelming number of spelling mistakes and is very hard to read; not very user-friendly.
These reviews are extremely concerning. Look at the wording, punctuation etc. It looks very evident that they were all made by the same person, someone who's first language isn't English (which is fine, just odd that they are all the same). Also, all reviews were within a few days of each other, and all 5 stars. I would bet a large sum of money the person selling these made the reviews. Look at the questions/answers and you'll see negative reviews. Buyer beware!