GT-531 CR

SMS/GSM Controller/Modbus/1 RS-485/2RS-232

  • 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
  • Up to 256 mobile phones can be alerted for each alarm point
  • 1 RS-485, 2 RS-232 port
  • Support micro SD card. (option , max. 2G bytes)