I have a SimpliSafe system on my garage. It works fine, the only negative is that the door/window sensors are battery powered. Dead battery = no alarm if a door opens. The door sensor does beep every time you open the door (when system is disarmed) so you know the battery is still good.The base unit is 110v, so no issues there.
Bentley, I don't recall your 4 legged security system being very effective
