The SMS-534 is an intelligent 3G SMS/Voice alarm controller for industry applications with the simple commands and SMS tunnel function, and powered by the external power source or Li-Battery. It supports UNICODE or 7 bit format for users to implement sending SMS messages with various languages. Except for supporting SMS alarm, it also offers the voice alarm function by recorded voice files when the DI or AI events are triggered. In addition, the DTMF(Dual-Tone Multi-Frequency) function of the SMS-534 allows phones to control the local I/O remotely. It means the SMS-534 can be a remote control and alarm system allowing you to use your mobile phone to monitor and control your business from any location, and meantime it’s more flexible that PLC/PAC/PC can via the SMS-534 to send SMS or call out through its RS-232 or RS-485 ports.
Moreover, with the SMS DBS(Database System) software, users can manage these SMS messages of the SMS-534 in PC side. It is easy to use in Machine monitoring application, Vending-machine monitoring system, UAV control room and Console-monitoring system. Other than those functions described above, the simple I/O linkage function of the SMS-534 series can reach the real time control in the local field. It also has I/O data logger function which save I/O data in micro SD card.(
http://m2m.icpdas.com/SMS_DBS.html)