Almost a year, and they are great!
I have had AMSA for almost a year now. I really do like their service. I had them call the police out twice when my dog walker set off my alarm. They were very prompt! I couldn't be reached because I was out of town and didn't hear my phone ring. They had called the police so quickly after I didn't answer that I couldn't cancel the police in time. I really love the service at this company. I got a great deal when they were retrofitting the current alarm system I had in place, and I have a great monthly plan at $12.95. I would recommend AMSA and have to my neighborhood.