... 900/1800/1900mhz The sn2300G is a very powerful GSM alarm,1. Group SMS, landline and GSM CDMA optional3. Programme the phone numbers ... in, speak, sound siren, disarm remotely from users phone.7. 6 groups timed auto arm/disarm, Away ... as new sn2300, 5900 and 2200. the GSM phone numbers are programmed directly on the panel, 8pcs SMS ... all, the SMS is edited by the cell phone and then send to the panel. The ...