Not sure how I missed this. But anyone that reads it and wants the inside of how ADT, Monitronics, Vivint, Pinnicale, (and any of the other door to door crews work ) PM me. I installed for Pinnical ( Became Devcon, and is now part of Protection One I belive) for 8 years. There can be some good deals to be had but just need to know how to work it. Also if you have a GE based system and are looking for some cheap door/window sensors, Carbon Monoxide, or Smoke sensors hit me up. I have a box of em I found this weekend while cleaning and would love to get rid of em cheap to help some one out.