GT-531 is an intelligent Modbus SMS/GSM Gateway for industry M2M applications. It is convenient for users to apply to M2M applications with the host like PC, PLC, HMI and PAC via Modbus RTU command. GT-531 supports UNICODE format for users to send SMS messages to the specific mobile phones by Modbus RTU protocol with various language. That can make the current system to M2M applications. Moreover, the GT-531 also supports the sound alarm application with the pre-defined voice files. It can be used to inform operator for the urgent event immediately. For managing more GT-53x series remotely, ICP DAS provides SMS DBS software for users to integrate these GT-53x series in the applications.
Therefore, the GT-531 can be a powerful tool allowing you to use your mobile phone to monitor and control your business from any location.

• Support Quad-band 850/900/1800/1900 MHz frequency
• Support Modbus RTU slave protocol
• Support max. 256 short messages and voice alarms
• Support max. 70 Unicode Characters
• Easy to setup and configure
• Escalation and reminder function
• Up to 256 mobile phones can be alerted for each alarm point
• These phone numbers can be divided into groups
• Configurable SMS messages
• The content of sending SMS message can be changed by Modbus protocol
• Built-in Watch-dog Function
• Industrial Design with Surge Protection
• Support SMS DBS of ICP DAS software
• 1 RS-485, 2 RS-232 port
• Support micro SD card. (option , max. 2G bytes)
• Support DC +10 VDC ~ +30 VDC Power Input
• DIN Rail design