honeywell system - adding zones/devices

["johnmolinda@xxxxxxxxx" <johnmolinda@xxxxxxxxx>]

I have a home alarm system that uses Honeywell/Ademco devices. I want
to add a new motion detector and a new window detector. How can I do
this? The the alarm company refuses to give instructions to me; they
want to send a tech out for $100/hr.  The keypad is the Vista-15.
(they also wanted to charge me $150 for a motion detector and I just
bought 2 of them on ebay for $50 total).