I was looking for a standalone alarm for a local garden, I am delighted with this alarm that responds well to my attentes.l'alarme detects that one goes in and you have 4 seconds to turn off the siren of 130 decibels is unbearable when it is on and that is the purpose of this alarm, scare away thieves. small problem must be less than 1 meter to disable the alarm with the remote control, the scope is not large, otherwise it is a good deal