While looking for gates/pens to help contain my little psycho I found this does anyone have any feedback on it? Is it safe? Does anyone here use something like this?

http://www.petproductdepot.net/innotek_ZND-1200.htm

I have no experience or knowledge of this type of product but our trainer told us in class that she is against using these b/c dogs are so sensitive to radio waves that these can actually cross with cell phone signals and other radio waves that it can 'mess a dog up' so to speak.  One of the owners in class brought it up b/c she was trying one and said that he dog freaked out every time her she went near it with her cell phone clipped on her hip.

My neighbors have had a system similar to this one.  It lasted for about a minute and a half.  I don't think that I would waste my money.