1.GPRS DTU (Data Terminal unit) the full name of data transmission unit is designed for converting serial data to IP data or IP data to serial data for the radio terminal device via a wireless communication network. GPRS DTU-7S is to use the GPRS network data transmission equipment, which uses industrial grade embedded processors, embedded TCP / IP protocol stack. GPRS DTU-7S is an industrial grade GPRS wireless module provides a standard TTL data interface, you can easily connect your device, just time to complete the initial configuration, the user device can establish a connection to the data center via GPRS wireless network, data transparent transmission. To provide users with high-speed, reliable, always-on data terminal, multiple protocol conversion virtual private network.
2.Operating voltage: 7S: 3.8 ~ 4.2V
3.Current: work 10 ~ 100 mA, maximum 1200mA
4.Working temperature: -20 ~ 75 degrees
5.Storage temperature: -40 ~ 85 degrees
6.Storage Humidity: 5% ~ 95% RH
7.Maximum transmit power: GSM900 class4 (2W)
8.DCS1800 class1 (1W)
9.Operating Frequency: Quad-band 850/900/1800/1900MHZ
10.Three lights (POW / NET / DATA), respectively, indicate power, work status, connection status

 

Feature:

1.Use the simplest DTU, the user simply minimal configuration parameters can be used
2.Use WAVECOM Industrial Module (GPRS323 - 701 uses MD251 industrial grade module )
3.Use single module embedded protocol stack solutions , no external CPU, higher stability , embedded TCP / IP protocol stack and GPRS technology
4.TTL interface , maximum support 4-way network connection , serial data received can be forwarded to multiple servers simultaneously
5.Supports keep-alive mechanism , in the absence of heartbeat packets can also maintain the connection is not dropped
6.Support for remote parameter configuration , you can send AT commands to configure all parameters via SMS
7.Supports remote configuration password authentication to provide effective security
8.Support China Unicom , mobile GPRS network ( or GSM network ) , support for EDGE, quad-band module globally
9.Support network access the public network and APN
10.Configurable heartbeat packet data format , sending interval , and connected to the server , you can configure the login packet
11.Data formats, and web servers automatically establish a network connection
12.Support ALWAYS ONLINE ( always online ) mode, support dropped reconnection
13.Completely transparent transmission mode , digital radio can completely replace the original system without any changes
14.Can be equipped with suction cup antenna , user-friendly installation in the iron enclosure
15.GPRS disconnection serial data caching functionality , maximum data cache 15K
16.Software provides a virtual serial port , TCPIP network debugging assistant , GPRS DTU setup software , socket programming examples , such as the wealth of information
17.The use of imported serial seat, support thousands of mating cycles without damage
18.Supporting power ( a few k without a quality problem ) , to improve the stability of the system work , DTU uses advanced power technology, users can use standard power adapter . Power also enjoys the unconditional two-year warranty .

Package: 

1.USR-GPRS232-7S module one
2.Data CD-ROM a piece
3.GSM antenna a sucker

 

Application Diagram:
1.There is a block diagram of a public network server applications.

 

 

2.Application Diagram transit through the router.

 

3.Application Diagram server transfer mode.