Make sure your motion sensors are professionally installed and calibrated
Check with the alarm company before and after remodeling work to make sure electrical and communication lines are not disturbed
Make sure that everyone who can let themselves in or out of your premises knows how to arm and disarm the system
Insist that you are trained on your alarm system. Don't let the installer just hand you a manual and walk away
Routine maintenance and proper operation of your system will help prevent unwanted alarms: include your alarm system updates in your regular home maintenance calendar
Have your system inspected after an unverifiable alarm
Inspect your window and door jambs regularly, checking for warping, poor fitting, or loose paint and varnish
If you have pets, be sure they are in an area not covered by motion sensors
Replace your system's main backup battery every 3-5 years