D223 M2M Modem GSM 3G DTU Support Programmable SMS Data Transfer with TTL RS485 Port Access Control

Description The GSM 3G IOT M2M Modem DTU D223 is a powerful and programmable multi purpose wireless cellular modem and data transfer unit DTU It provides a secure high speed reliable wireless data transmission between com port and internet connection for customers over 3G wireless cellular network Also it can be used as SMS modem and Modbus RTU to Modbus TCP converter Moreover it is suitable for transparent transferring SMS text between mobile phone computer and RS232 RS485 TTL Serial port over GSM 3Gwireless cellular network It can be used as SMS modem supports transparent transferring SMS AT Commands and provides 1 digital input can be used as SMS Alarm and Pulse Counter Alarm too Features Can be operated from anywhere no distance limitation Quad band 850 900 1800 1900Mhz GSM GPRS Module inside Embedded 32 bit ARM9 MCU reliable performance with in built watchdog Multi functional supports AT Commands Transparent SMS and Data Transfer 1 TTL port can be used for TTL device data transfer 1 three wire RS485 serial port RS232 is optional Baud rate adjustable from 1200 115200bps 15KV ESD protection 1 digital input supports dry contact wet contact pulse counter can be used as alarm or trigger to wakeup or online event Powerful programmable features supports programmable handshake message etc Real time online data transfer supports always only or event triggered online Build in protocol stack support TCP UDP network protocol Support transparent data