产品介绍:智能短信警报控制器Support 900/1800/1900 MHz Tri-band frequencyIdentify ASCII or Unicode SMS AutomaticallySupport max. 140 ASCII CharactersSupport max. 70 Unicode CharactersBuilt-in ASCII Commands and SMS tunnel Communication ModesMax. 10 Default Phone NumbersBuilt-in Watch-dog FunctionIndustrial Design with Surge ProtectionSupport SMS setting and control10 DI (6 Counter), 2 DO, 2 RS-232 portDigital input support NC(normal close)/NO(normal open)/Counter modesSend alarm SMS by DI trigger or exceed Counter preset limitsSupport simple command to send SMS via RS232Support DC +10 VDC ~ +30 VDC Power InputSupports 3.7 V Li-ion Battery BackupDIN Rail design