Burglar Alarm?

Since I am away from the trailer for up to 8 hours per day while fishing, I installed this system from Harbor Freight.
http://www.harborfreight.com/six-sensor-wireless-home-alarm-94799.html
All entry points to the fifth wheel and all exterior storage doors are alarmed.
My intention is that the noise of the alarm will scare any intruders away and towards other easier targets.