There are a few reasons why I would not purchase that remote locking system:
2) Battery operated locks. Batteries die and you would still need to carry a key.
3) I already have a remote for the truck alarm/starter system. I do not need to carry another remote for the door lock on the trailer.
4) I usually stay within the area of the trailer, so I am not too concerned about someone breaking in my trailer. If they want something bad enough, they will get it anyway and damage my trailer and the repair cost would be more than what they took out of the trailer.
Healthi - PM me for info on an alarm that will work with a pet inside. The simple answer is:
Do not get one that has a proximity/motion sensor (movement inside sets off the alarm. Normally an infrared sensor)
If you get one that has a "Shock Sensor", it should be set at a point where it would not be set off with a pet jumping off the bed or running around inside, OR do not install the "Shock Sensor".