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DLK-D230
Product Detail:
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RF Characteristics:
GSM phase 2/2+ standard
Quad-band：GSM850MHz   EGSM900MHz
DCS1800MHz   PCS1900MHz
Transmitting power：
Class4(2W) at GSM850 and EGSM900
Class1(1W) at DCS1800 and PCS1900
 
Power Consumption:
Input Voltage: DC5 ~ 25V (DC 9V Adapter as standard)
SIM card operating voltage: 3V/1.8V
Current Consumption:
Talk mode: 310mA (average)
Sleep mode: 3.0mA (max)
Idle mode: 10.0mA (max)

Features:
SMS: MT, MO, CB, and PDU mode
Messaging content: support digital, voice, SMS and fax
Module reset: reset using AT command or power-down
Audio decoding standards (three rates):
Half speed (ETS 06.20) Full Speed ​​(ETS 06.10)
Enhanced full-speed (ETS06.50/06.60/06.80)
Maximum transfer rate: 14.4KBPS

Volume:
Without mounting holes and interfaces: 64 * 46 * 18.5mm
With mounting holes and interfaces: 78 * 66 * 18.5mm
Weight: 200g

Appearance:
Shell Package: good electromagnetic shield and metal housing, durable; anti-electromagnetic interference, excellent cooling capacity in high-temperature
Interface: standard RS-232/RS-485/TTL level, DB9 Interface
Antenna: 50ohm/SMA/Female

Environment:
Operating temperature: -40℃~ +65℃
Automatic shutdown:> / +70℃
Storage temperature: -50℃~ +85℃
Humidity: ≤ 90%
Magnetic compatibility: Electrostatic Discharge Immunity Test Level: 3
Radio frequency electromagnetic radiation: Immunity Test Level: 3

     DLK-D230 GPRS DTU is developed by Dial-Link for a simpler and more practical GPRS communication solution. TCP / IP protocol stack is embedded to avoid embedding the protocol in client system while using common modules, which have not TCP / IP protocol. DLK-D230 GPRS DTU achieves reliable transparent data transfer by making use of the GPRS network.
 
DLK-D230 GPRS DTU is characterized for aspect below: (1) both interface design and external servo circuit is simplified to suit harsh industrial site. (2) 3 kinds of level interface, including RS-232, RS-485 TTL. (3) AT+i commands complete data communication between terminals, largely reducing development time and maintenance effort for users.
 
     Moreover DLK-D230 GPRS DTU is able to realize flexible access of various equipments, and simple installation. The product widely applies to data collection and transmission system of serial communication SCM, PLC, RTU, and IPC, etc. The product enables wired serial devices of customer to change to wireless network communication devices immediately, reducing input of system update.
 
◆ QUECTEL M20 wireless module embedded, all AT command sets compatible
◆ Smallest in similar products, suitable for embedded integration
◆ Power saving mode, fit for mobile devices
◆ Able to update Firmware, to reach better transmission quality
◆ Able to realize flexible networking including point to point, multipoint, and APN line, support two modes of CLIENT and SERVER
◆ Heartbeat function based on P ING mode, keep the link flow
◆ Low power consumption: 3mA current in sleep state
◆ Support transfer rate encoded with three languages
◆ TCP / IP protocol stack built-in, support multiple protocols including TCP, UDP, DNS, PPP, DHCP, etc.
◆ GPRS and TCP / IP technology highly integrated, to combine the Internet and GPRS network
◆ Transparent transmission mode, able to replace data radio to update the system without changing the original system
◆ Support ALWAYS ONLINE mode, support dropped reconnect
◆ Support GPRS data transmission on line, telephone wake-up, remote reset and upgrade
◆ Short connection function in transparent mode, timing automatic release and re-connect of link
◆ Real-time dynamic refresh to solve wireless network "false connection" phenomenon
 
Power: automation system of urban distribution network, real-time monitoring and automatic power compensation, remote automatic power meter reading
Highway weather station: data transmission of temperature, humidity, wind direction, wind speed and spatial resolution on highway
Oil: real-time online detection of pipeline temperature, oil field data collection
Mine: real-time online mine detection
Finance: POS machine networking
Communication: dynamic environment monitoring of telecommunication room, line information inquiry of communication maintenance workers 
Public security: monitoring and dispatching of public security and traffic police vehicles, police mobile data (ID card, crime files, etc.) inquiry
Heat: real-time monitoring and maintenance of thermal systems
Industry: industrial remote sensing, telemetry, remote control information return
Weather: meteorological data acquisition and transmission
Water: hydrological monitoring
Life: real-time data acquisition and automatic control of gas regulator station, real-time monitoring and maintenance of water and sewage pipes, gates and water plants
Transportation: street surveillance, traffic flow information, GPRS / SMS / GPS monitoring and dispatching system of motor vehicles; monitoring and dispatching of bank armored cars and postal vehicles
 
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