Latest GSM Alarm System, New Design GSM Alarm , GSM Alarms For industrial GSM alarm box with 3 alarm input and 3 relay output   GSM QUAD Band Network Alarm Security Alarm with SMS Alert   QUAD band designed for the world market Three alarm input port Three 30A big power relay output Battery operated for power off alarm USB program interface on board Huobei intelligent design Rain proof box design Dimension Size:220mm*160mm*60mm (including the connnector) Power supply: DC9-36V (This is for normal order if no special requirement) DC18-72V (Optional) AC100V-240V (Optional) Very Smart and innovative design with: 1. Security control or free control selection 2. SMS cost save mode,that you can use the SMS to control ,but no SMS reply 3. Device status change alarm report SMS to the specified phone number 4. Three alarm input .very easy to setup and very easy to use 4. Recharageable Battery for power failure alarm Inside alarm controller Backup battery for power off alarm Safety designed rain proof ABS plastic box Can be locked with the safety key lock No screw designed controller box Very good and strong designed circuit board Package Inside alarm box: Box side.that can be locked with the mechnical lock for security alarm Alarm system Cover box: GSM alarm Package box