Perimeter Security Systems is a great company. I have been dealing with them since around 1997 and I've encountered no problems at all with their service. The quality of the product is just fine and there are rarely any problems with it. If there are any issues, I just give them a call and they are pretty prompt about responding and taking care of it. They have great customer service. Their pricing is reasonable for the service they provide. Overall, I'm very satisfied with them.