Name: GPRS DTU(RS232)

Model: D220

The GPRS DTU is a wireless data transfer unit that embedded with High reliable ARM9 MCU and industrial GPRS Engine inside. The GPRS DTU is special for transparent transferring data between RS232 port and internet over GPRS wireless network. The GPRS wireless 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.

GPRS DTU 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.

Model List Table

Model No.	Name	GSM Frequency	Interface
D220	GPRS DTU,	850/900/1800/1900MHz	RS-232
D221	GPRS DTU	850/900/1800/1900MHz	RS-485

How Does the GPRS DTU works?

The GPRS DTU with dynamic IP address, if you want to create the connection between the server and GPRS DTU, must using call, SMS or Com port to activate the GPRS DTU firstly. Then the GPRS DTU will create the connection to the Server to build the tunnel, so the server can communicate to the GPRS DTU. The GPRS DTU with the heartbeat, it can keep the connection tunnel online all the time. Once the connection disconnected, the GPRS DTU will auto redial to create the connection. The server must with static IP address or DNS.

Under TCP/UDP mode, when the data length exceeds a fixed length or within the fixed time no new data received, the GPRS DTU 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.

Functions & Features of the GPRS DTU:

GPRS Data Transmission, no distance limitation;Real-time online data transfer;Three-wire serial (TXD / A + RXD/B- , GND) , ± 15KV ESD protection;Baud rate adjustable from 1200~115200bps;Build-in protocol, support TCP/UDP/IP/PPP network protocol;Embedded 32 bit ARM9-MCU with real-time operating system;“Plug and Play” solution can realize data transmission between com port and internet;It provides a secure, high speed, reliable wireless internet connection for customers;Adopt smart online keeping technology to make sure that DTU is always online;Support transparent data transfer and protocol conversion;Supports point-to-point , Point–to–Multipoint, Multipoint-to-Multipoint Communication Mode;Heartbeat function and autodial to ensure the device online;Supports DNS and static data service center IP address;Supports Remote configuration;Supports wakeup by SMS, Call and Comport;Built in hardware Watch Dog Timer to ensure it reliable and stable;Industrial class design suitable for long time work applications.Size: (L x B xH): 75mm x 50mm x 16mm(5.3”x3.7”x1.4”)

Standard Package list of the GPRS DTU:

Mainframe X1

AC/DC AdaptorX1

GSM Antenna X1

User Manual X1

PC ConfiguratorX1

Specifications of the GPRS DTU:

Item	Specification
Working Voltage	normal mode: DC9V-32V , typical DC12V/1A
Power Consumption	Max:500mW, Standby:150mW , Average:180mW
GPRS Network	850/900/1800/1900 MHz; GPRS Class 2~10, CS1~S4
Protocol	TCP,UDP,PPP,
Theory bandwidth	171.2Kb/s;
actual bandwidth	20-30Kb/s;
SIMCARD	1.8V/3V
GSM Connector:	SMA antenna
Terminal Connector	3.5mm 12pin terminals
Receive Sensitivity	-102dBm
Working Temperature	Operation: -35~80°C Restricted Operation: -35~-45°C
Storage temperature	-45~90°C
Related Humidity	<85%(20±5°C),non-condense
Air Pressure	86~208Kpa
Audio	Reserved for future
Data Com Port	RS232 Baud Rate optional 1200~115200bps,transparent data transferring mode.
Configure Com Port	RS232 Baud Rate optional 1200~115200bps
GPIO	Reserved for future
Electronic Compatibility	Class 3 Radio electromagnetism test
Dimension	DTU(L x B xH): 75mm x 50mm x 16mm(5.3”x3.7”x1.4”),
Weight	DTU N.W.: 200g, Packaging: 690g

The GPRS RTUsuitable for below applications:

u 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

u Automatic monitoring system

u Vending Machines,ATM,POS

u The traffic Industry

1.Traffic instructions

2.Vehicle Park Guide

3.Expressway monitoring

4.Traffic lights control and photograph transmission

u Water Industry

1.Water Monitoring

2.Water Meter Reading

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

u Environment , meteorology, oil and other industries

1.Environmental protection of key pollution sources monitoring

2.Environmental monitoring

3.Meteorological monitoring

u The noise real-time monitoring

u Oilfield monitoring

u Heating network monitoring

u Coal monitoring

u Seismic monitoring

u All kinds device with RS232 serial port of the PLC, RTU wireless data transmission.

In one word, the GPRS RTU suitable for transferring data from device to internet, and transferring data from internet(Monitoring center or server) to device.