The GSM/GPRS/3G/4G IOT M2M Modem D223 is a powerful and programmablemulti-purpose wireless cellular modem and data transfer unit (DTU). It embedded high reliable 32bit ARM9 MCU and industrial GSM/GPRS/3G/4G Cellular Engine inside. It provides a secure, high speed, reliable wireless data transmission between com port and internet connection for customers over GPRS/3G/4G 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/3G/4G wireless 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.
The GPRS/3G/4G wireless cellular communication has become widely used of industrials and utilities and many customers are requiring reliable, flexible and cost-effective data channel to build their information system. Many applications such as Remote device monitoring, remote automatic metering system, ATM, data logging system, POS, SCADA and surveillance system will require data channels covered all country.
The GSM/GPRS/3G/4G IOT M2M Modem is an ideal solution for factory automation, environmental monitoring and remote device management for M2M industry. Meanwhile, it is supplied with simple and user friendly PC Configurator to configuration, easy to installation.



1.     Can be operated from anywhere, no distance limitation;
2.     Quad band 850/900/1800/1900Mhz GSM GPRS Module inside;
3.     3G UMTS/HSDPA/4G Modules are optional.;
4.     Embedded 32 bit ARM9 MCU, reliable performance with in-built watchdog;
5.     Multi-functional, supports AT Commands, Transparent SMS and Data Transfer;
6.     1 TTL port can be used for TTL device data transfer;
7.     1 three-wire RS485 serial port, RS232 is optional, Baud rate adjustable from 1200~115200bps, 15KV ESD protection;
8.   1 digital input, supports dry contact, wet contact, pulse counter can be used as alarm, or trigger to wakeup or online event;
9.     Powerful programmable features, supports programmable handshake message, etc;
10.  Real-time online data transfer, supports always only or event triggered online;
11.  Build-in protocol stack, support TCP/UDP network protocol;
12.  Support transparent data transfer and Modbus TCP protocol conversion;
13.  Heartbeat function and autodial to ensure the device online;
14.  Supports DNS and static data service center IP address;
15.  Supports wakeup by SMS, Call and Comport, Timer, Digital input or pulse counter input;
16.  Automatically restart the cellular module while communication failure, and resend the data in the cache, the cache capacity up to 500 bytes, also when cellular communication failure will alert by SMS text;
17.  Supports remotely restart the device, and configure it by SMS commands remotely;
18.  Up to 10 user's phone number to receive alarm and daily report SMS/Call;
19.  Industrial class design suitable for long time work applications;
20.  Support configure parameters, load profiles and upgrade the firmware via PC;
21.  Wall mount or 35mm standard DIN rail Design, convenient installation,
22.  Metallic cover, small size, exterior dimension is L70*W88*H30mm.
Model List TableA:

Model No.	Applications	Serial Port Interface	DIN
D222	AT Command SMS Transparent transfer, DIN or Pulse Counter monitoring.	USB,TTL,RS485 or RS232	1 Digital inpupt, Can be used as DIN monitoring and Pulse counter SMS Alarm.
D223	AT Command SMS Transparent transfer, DIN or Pulse Counter monitoring.	USB,TTL,RS485 or RS232	1 Digital input, Can be used as event trigger the Modem online and Can be used as DIN monitoring and Pulse counter SMS

	Data Transparent Transfer, Modbus RTU to Modbus TCP Converter		Alarm.
Notice: Default is GSM/GPRS Module inside, 3G/4G Module is optional; Default is TTL+RS485 Serial Port, RS232 is optional;

Specifications of the GSM/GPRS/3G/4G IOT M2M Modem:

Item	Specification
Working Voltage	normal mode: DC9V-36V , typical DC12V/1A
Power Consumption	Max:500mW, Standby:150mW , Average:180mW
Cellular Network	2G: 850/900/1800/1900Mhz 3G version Optional: (UMTS/HSDPA) W:900/2100@UMTS 900/1800@GSM; C:850/1900@UMTS 850/900/1800/1900@GSM; T:850/2100@UMTS 850/900/1800/1900@GSM; 4G LTE
Protocol	TCP,UDP,PPP,SMS, Modbus TCP
SIMCARD	3V
Anttena Connector:	SMA antenna,50ohm.
Receive Sensitivity	-102dBm
Working Temperature	Operation: -35~80C Restricted Operation: -35~-45C
Storage temperature	-45~90C
Related Humidity	<85%(205C),non-condense
Air Pressure	86~208Kpa
Digital input	1, Dry Contact NC or NO, Wet Contact: 0-0.5VDC stands for close, 3-30VDC stands for Open, pulse counter.
Data Com Port	3-Wires, RS232/485 Baud Rate optional 1200~115200bps,Default is RS485, Optional: RS232
TTL Port	GND, Tx, Rx
Configure Com Port	USB
Voltage Output	Provide DC power to external device, voltage =DC Input
Dimension	(L x W xH): 70mm x 88mm x 30mm
Net Weight	300g

Standard Package list of the GSM/GPRS/3G/4G IOT M2M Modem:
Mainframe X1
AC/DC AdaptorX1
GSM/3G/4G Antenna X1
User Manual X1
PC ConfiguratorX1