the only worry, if like me your input is external, it is the weather protection, this device is designed for use inside buildings off rain-wind-sun I have prepared a mini shelter Plexiglas board glued screwed on him, and months of operation confirmed its reliability only problem it has happened that the command button hangs, and therefore continuous ringing, remains to re arm by pressing again to unlock the transmission among us on 25 meters fence and concrete walls
