Don't waste your money
I was looking for a book that would help me upgrade our home security system. This looked like the one. NOT!To say it was superficial would be to give it too much credit. The section on installation was 3 pages long. It's chock full of fluff, nothing is covered in enough depth to be of any use.I was hoping to find out how the pros pulled wires into walls -- what tools they used, what tricks they used, etc. NOT!I was looking for a book that would discuss the features available in various systems and which ones were useful. NOT!Save your money. I sent my book back, but I still had to pay the shipping both ways.I was so disappointed!