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GPRS2G/3G/4G DTU
MD-649 4G Wireless Data Terminal
MD-639 3G Wireless Data Terminal
MD-149 4G Wireless Data Terminal
MD-609G high-powered GPRS Data Terminal
MD-600G Wireless Data Terminal
MD-600C Wireless Data Terminal
MD-610G GPRS DTU with
Wireless Router
ER-800 4G Wireless Router
ER-701 3G Wireless Router
MR-900G Wireless Router
MR-900E EV-DO 3G Wireless Router
MR-900W W-CDMA 3G Wireless Router
LED Wireless Terminal
LED-528 GPRS LED Combo Terminal
LED-200 GPRS Terminal
Wiressless Video Terminal
MV-706 CDMA Video Terminal
Wireless Sensor Network
ZB-200 T & H monitoring system
  MD-639 Overview

MD-639 is a 3G DTU produced by eTung in 2014. Compared with traditional GPRS DTU, MD-639 works in 3G network, and has capability of high-speed data transfer. In China Unicom¨s WCDMA network, in theory the downlink speed can reach 14.4Mbps, and uplink speed can reach 5.76Mbps; and in China Telecom¨s CDMA2000 EVDO RevA network, the downlink speed in theory can reach 3.1Mbps, and uplink speed can reach 1.8Mbps.

MD-639 has built-in industry-level 3G module, with data transfer more stable and efficient. It has more flexible interfaces and ways of software integration; it can be regarded by customers as an easy-to-use and useful 3G DTU product.

MD-639 can connect quickly with RTU, PLC, or IPC, and implement remote and transparent data transfer. It can be used widely in various industries related to ^Internet of things ̄.

   Features
    , It supports China Unicom and China Telecom¨s 3G networks
    , The serial port DB9 pins support RS232 and RS485 at the same time, and the serial port type(RS232 or RS485) can be configured via DTU configuration software or remote control
    , It can connect with mServer, and other kinds of data center software as well
    , It can be used without shell; the size without shell is smaller, and there are preserved installation holes that can be easily integrated into customer¨s device
    , It supports use cases such as point to point, point to multiple points, and serial to serial port
    , It uses industrial components and can be used in adverse environment; It can work within -30≧ ~+75≧ temperature range
   Application
    , In electric power industry, MD-639 can be used in data transfer areas such as reactive compensation, distribution monitoring, electric meter reading and lamp monitoring
    , In water application industry, MD-639 can play in wireless communication areas such as water meter reading, water resource remote monitoring, and water transportation network monitoring
    , In environment protection area, MD-639 can fully deserve 3G soldier in pollution online monitoring system such as Continuous Emission Monitoring System(CEMS), water quality monitoring system
    , In device maintenance area, such as elevator monitoring and air-conditioner monitoring, MD-639 can be embedded quickly into customer¨s appliance and implement 3G wireless data transfer
    , In heating industry, MD-639 can connect with MBUS concentrator to implement heating meter reading, implement remote data transfer for household heating measurement; it can also connect with PLC or collector to implement remote monitoring of heat exchange station
  Basic Parameters
    . Power Supply: +5 ~ +36V wide range of voltage input
    , Power Connector: inner(+) outer(-)
    , Network:GSM/GPRS/EDGE/WCDMA/HSDPA/HSUPA/HSPA+CDMA2000 1x/EVDO RevA
        2G: GSM/GPRS/EDGE
        3G: UMTS/WCDMA/HSDPA/HSPA+/TD-SCDMA/TD-HSDPA/TD-HSUPA
        4G: LTE-FDD/LTE-TDD
    , Frequency:
        Single-Band UMTS(HSPA+): 2100MHz
        Quad-Band GSM/GPRS/EDGE: 850/900/1800/1900MHz
        CDMA2000 1x/EVDO RevA: 800MHz
    , Data interface: RS232/485
    , Temperature: -30≧ ~ +75≧
    , Humidity: 95%@+40≧
    , Dimensions: 103x64x24mm (excluding antenna and handle)

Model Work Current Standby Current
MD-639W 260mA@+5V DC
120 mA@+12V DC
110mA@+5V DC
90 mA@+12V DC
MD-639E 230mA@+5V DC
90mA@+12V DC
130mA@+5V DC
50mA@+12V DC
  Communication
    , Adjustable baud rate on data interface
    , Support hard flow control on serial interface
    , Support standard TCP/IP protocol with both TCP and UDP
    , Adjustable heart-beat interval and time-out value
    , Support always online
    , Support SMS and ringing tone wakeup(wakeup online)
    , Support Address-IMEI Mapping to save wireless bandwidth
  Stability
    , Host CPU: 32-bit ARM processor
    , Built-in soft/hard watch dog
    , Built-in TCP/IP protocol stack
  Data Center
    , Support domain name
    , Compatible with various data center software
  Configuration
    , Configurable via serial port
    , Configurable via hyper terminal with menus

  Technical Advantages

    , Built-in industry-level 3G module with data transfer more stable and efficient
    , Support point-to-point and multipoint-to-point communication with 3G wireless network at both ends
    , Support connecting to 4 data centers at the same time
    , The serial port DB9 pins support RS232 and RS485 at the same time, and the serial port type(RS232 or RS485) can be configured via DTU configuration software or remote control
    , Support sending SMS
    , Support 3G and SMS as backup
    , Support modifying DTU configurations via SMS
    , Support modifying DTU configurations remotely at server side
    , Support querying SIM card number remotely, checking SIM card balance and traffic within DTU
    , Support device remote re-boot
    , Support 3G APN name auto-adaption
    , Support LBS location
    , Support eYun platform, server building not needed and plug-and-play
    , Support chuankoutong, virtual serial port programming not needed
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