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New Cellular Network GPRS Modem 3G Modem 4G Modem

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Quick Details

Port: SZ
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 8000 Box/Boxes per Day
Place of Origin: Guangdong China
Configure Com Port: USB
Storage temperature: -45~90℃
Transmission Rate: 2Mbps
Dimension: 70mm x 88mm x 30mm
Model Number: D223
Certification: CE ROHS FCC
Receive Sensitivity: -102dBm
Name: New Cellular Network GPRS Modem 3G Modem 4G Modem
Brand Name: King Pigeon
Type: Wireless
TTL Port: GND, Tx, Rx
Related Humidity: <85%(20±5℃),non-condense
Products Status: Stock
Style: External
Digital input: 1, Dry Contact NC or NO, Wet Contact;pulse counter
Protocol: TCP,UDP,PPP,SMS, Modbus TCP
Interface Type: RS485/RS232/TTL/USB
Data Com Port: Default RS485
Packaging Detail: Mainframe X1 AC/DC AdaptorX1 GSM/3G/4G Antenna X1 User Manual X1 PC ConfiguratorX1
Shenzhen King Pigeon Comm Co., Ltd.
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Manufacturer, Trading Company
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US$ 70,000+
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About Us

King Pigeon Hi-Tech.Co.,Ltd. is a leading GSM GPRS 3G 4G RTU Controller and GSM GPRS 3G 4G Industrial IoT Solution manufacturer since 2005. It provides a complete product lines  and Cloud Platform, APP solution to meet different applications.


***Mianly Products***

GSM 3G 4G SMS Controller Alarm

GSM 3G 4G Remote Switch

GSM 3G 4G Gate Opener Intercom

GSM 3G 4G Remote Terminal Unit

GSM 3G 4G Modbus RTU 


GSM 3G 4G Power IoT RTU

433Mhz GSM 3G 4G Wireless RTU

Ethernet Remote I/O Module

Modbus RTU Remote I/O Module

GSM 3G 4G Security System

Web Server+Cloud Platform+APP


Quickly Guide List

GSM SMS GPRS 3G 4G RTU Controller Quick Selection Guide

Click Here

Modbus TCP Ethernet Remote I/O Module Quick Selection Guide

Click Here

Modbus RTU Remote I/O Module Quick Selection Guide

Click Here

GSM SMS 3G 4G Security Alarm Senior Care Quick Selection Guide

Click Here


Brief Introduction




The GSM/GPRS/3G/4G IOT M2M Modem DTU D223 is a powerful and programmable multi-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.






Under TCP/UDP mode, when the data length exceeds a fixed length or within the fixed time no new data received, the GSM/GPRS/3G/4G IOT M2M Modem will start to process the received data, packing the data then send to the specified IP address and Port or DNS and Port. Or unpack the data packets from the internet then transfer to the com port according to the baud rate.

The GSM/GPRS/3G/4G IOT M2M Modem suitable for below applications:

*The Electricity Power Industry

1. Remote Meter Reading

2. Power monitoring

3. Streetlight monitoring

4. Meter monitoring

5. Control Room monitoring

6. Power distribution automation remote control systems

*Automatic monitoring system

*Vending Machines,ATM,POS

*The traffic Industry

1.Traffic instructions

2. Vehicle Park Guide

3. Expressway monitoring

4. Traffic lights control and photograph transmission

*Water Industry

1.  Water Monitoring

2.  Water Meter Reading

3.  Real-time transmission of the water supply network monitoring

*Environment , meteorology, oil and other industries

1. Environmental protection of key pollution sources monitoring

2  Environmental monitoring

3. Meteorological monitoring

*The noise real-time monitoring

*Oilfield monitoring

*Heating network monitoring

*Coal monitoring

*Seismic monitoring

*All kinds device with RS232/RS485/TTL serial port of the PLC, RTU wireless data transmission.

In one word, the GSM/GPRS/3G/4G IOT M2M Modem suitable for transferring data from device to internet, and transferring data from internet(Monitoring center or server) to device.

Item Photos

 D223-11 D223-22

Main Features


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 12K 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.



More Information

Download User Manual, App, PC configurator please visit:


For Industrial IoT Solutions: http://www.GPRS-M2M.COM



For Home Security Alarms: