1.Alarm / mute alarm and continue dial your pre-set 4 / 6 groups of Tel No. at first time when accident happen. 2.Call first your preset tel, even another call already coming or someone using the telephone . 3.Faraway control by telephone to oper... - Update: 2007-07-27

1.Alarm / mute alarm and continue dial your pre-set 4 or 6 groups of Tel No. at first time when accident happen. 2.Call first your preset tel, even another call already coming or someone using the telephone . 3.Faraway control by telephone to op... - Update: 2007-07-27