The 4G DTU is an IoT wireless data terminal that provides long-distance data transmission over public carrier networks. It uses an industrial-grade CPU and wireless module along with a real-time operating system to transmit data from serial devices over RS232/RS485 interfaces. The 4G DTU supports TCP/IP protocols, wireless data transmission, SMS alarms, remote configuration, and software upgrades for applications such as power monitoring, meter reading, and industrial control systems.

1. Overview – 4G DTU
4G DTU is an IoT wireless data terminal that provides users with wireless
long-distance data transmission using a public carrier network. High-performance
industrial-grade 8/16/32-bit communication processor and industrial-grade wireless
module for embedded The real-time operating system is a software support platform,
and provides RS232 and RS485 (or RS422) interfaces, which can be directly
connected to serial devices to realize transparent data transmission.
Product characteristics
1. Industrial CPU: Industrial high performance embedded processor.
2. Industrial-grade wireless module: It adopts industrial-grade wireless module,
which has strong anti-interference and stable transmission.
3. Real-time operating system: A real-time operating system with a complete TCP/IP
protocol stack.
4. Industrial grade power supply: Wide voltage power supply design, power supply
adaptable range is DC5V~DC40V, built-in power supply reverse protection and over
voltage and overcurrent protection.
Stable and reliable
1. System protection: two levels (software protection + CPU built-in watchdog WDT
protection) system protection
2. Metal case: It adopts metal case, anti-radiation, anti-interference; safe isolation of
shell and system, lightning protection design; meets safety requirements; protection
grade is IP30; especially suitable for industrial control field with harsh environment.
3. All wireless modules are FCC certified or CE certified.
4. DNS automatic acquisition: automatic DNS acquisition
5. Perfect protocol stack: The new system is loaded with a complete TCP/IP protocol
stack, which makes the network communication performance excellent and the
probability of dropped calls greatly reduced.
Powerful
1. TCP transparent data transmission and UDP transparent data transmission;
support multiple working modes
2. Support virtual data private network (APN/VPDN)
3. Support dual data center backup and multiple data centers (8) to receive data, up
to 256 sending centers
4. Remote wake-up: support SMS, data and other wake-up methods and timeout to
disconnect from the network
5. Support fixed IP communication mode; support DDNS dynamic domain name
communication mode
6. Support wireless dial-up indication; support I/O pin hardware reset DTU
7. Support SMS remote configuration, remote control; support short message alarm
8. Support telnet function
9. Can be used as a normal dial MODEM

2. 10. Support serial software upgrade
11. Support for LINUX, UNIX and WINDOWS operating systems
Easy to use
1. Graphical configuration tool: Complete graphical configuration tool, providing
quick configuration function to achieve quick configuration of customers
2. Rich interface: 4G DTU series products, can provide RS232 interface or RS485
interface or TTL interface or RS422 interface or USB interface or RJ45 Ethernet
interface, full interface support.
3. Complete network support: 4G DTU series products, including 2G network (GSM
network), 2.5G network (GPRS network), 2.75G network (EDGE network), 3G
network (WCDMA network, EVDO network, TD-SCDMA network) ), 4G network
(HSPA+ network, LTE network), full network product support.
Technical parameters
Wireless module: Industrial grade wireless module
Standard and frequency band: support EGSM900/GSM1800MHz dual frequency,
optional GSM800/900/1800/1900M quad-band support
Theoretical bandwidth: 171.2Kb/s; actual bandwidth: 100Kbits>X>20Kbits/s
Transmit power: GSM850/900: <33dBm; GSM1800/1900: <30dBm
Receive sensitivity: <-107dBm
Feature support: support data, voice, SMS
Interface Type
Serial port CM3160P: 1 RS232 serial port CM3160EP: 1 RS232 serial port or 1 RS485
interface (can support RS422/TTL) Data bits: 7, 8 stop bits: 1, 2 bits check digit: no
parity, odd parity, even parity, SPACE and MARK check serial port rate: 110bps ~
230400bps flow control bit: no flow control, RTS / CTS hard flow control or XON /
XOFF soft flow control
Indicator light: with power supply POWER, signal SIGNAL, system SYSTEM...
Antenna interface: standard SMA female antenna interface, characteristic impedance
50 ohms; optional 3M/5M/10M/15M antenna extension cable to meet different
needs of customers
UIM card interface: 1.8V/3V/5V standard push-pull user card interface, built-in 15KV
ESD protection
Power connector: standard 3-core locomotive power socket
Power supply situation:
Power supply voltage Wide voltage design, DC 5V to DC40V power supply can
directly supply power to the device; built-in power supply reverse protection and
overvoltage and overcurrent protection
Standard power supply DC12V/1.5A
Physical characteristics:
Enclosure: metal casing, anti-radiation, anti-interference; safe isolation of casing and
system, lightning protection design; meets safety requirements; protection grade is
IP30; especially suitable for industrial control field with harsh environment
Working temperature: -35oC ~+75oC

3. Extended operating temperature: -35 oC~+75oC
Storage temperature: -40~+85oC
Relative humidity: 95% (no condensation)
Support EGSM900/GSM1800MHz dual frequency, 800/900/1800/1900MHz
quad-band optional
Support data, voice, SMS, etc.
Hardware system
1, CPU: Industrial grade high performance ARM9 embedded processor
2, FLASH: 32Mb (expandable to 128Mb) has enough memory to store programs and
data
3, SDRAM: 64MB, can be expanded to 256MB
4. Interface:
CM3160P: 1 RS232 serial port.
Serial port rate: 110bps ~ 230400bps
Data bit support: 8 or 7
Parity: None or Odd or Even
Stop position: 1 or 2
Flow Control: None or RTS/CTS
MMU: CPU with MMU memory management unit, can prevent system overflow
caused by memory overflow
Operating system: Real-time operating system with complete TCP/IP protocol stack
CM3160EP: 1 RS485 interface. (The hardware jumper can support RS232/422/TTL as
needed)
Serial port rate: 110bps ~ 230400bps
Data bit support: 8 or 7
Parity: None or Odd or Even
Stop position: 1 or 2
Flow Control: None or RTS/CTS
Control port: RS-232, 115200 bps, 8 data bits, 1 stop bit, no parity (8N1)
Indicator light: with power supply, signal, system, etc.
Antenna interface: Standard SMA female antenna interface with a characteristic
impedance of 50 ohms.
UIM card interface: 3V/5V standard push-pull user card interface.
Power connector: standard 3-core locomotive power socket.
5, power supply: External power supply: DC 12V 500mA
Wide voltage supply: DC 5-40V
6, other parameters: Working environment temperature -35~ 75ordm; C
Storage temperature -40~ 85ordm; C
Relative humidity 95% (no condensation)
Software function
TCP/UDP transparent data transmission; support multiple working modes, heartbeat
packet technology
Intelligent anti-drop line, support online detection, online maintenance, automatic
redial of dropped calls, ensuring that the device is always online
Support RSA, RC4 encryption algorithm

4. Support virtual data private network (APN/VPDN)
Support data center dynamic domain name and IP address access
Support DNS dynamic acquisition to prevent device crash caused by abnormal DNS
server
Support for dual data center backup
Support multiple data centers to accept data simultaneously
Support short message backup and alarm
Multiple hardware and software watchdogs
Packet transmission status report
Can be used as a normal dial MODEM
Support telnet function
Support remote configuration, remote control
Upgrade through serial port software
Support for LINUX, UNIX and WINDOWS operating systems
4G DTU application
Power monitoring / oil field monitoring / remote meter reading / street light
monitoring / environmental monitoring / meteorological monitoring / water
monitoring / heating network monitoring / meter monitoring / computer room
monitoring / traffic instructions / coal monitoring / seismic monitoring / vehicle
induction / water supply monitoring / highway monitoring / Noise real-time
monitoring / environmental protection key pollution source monitoring / water
supply pipe network real-time transmission monitoring / power distribution network
automation remote control system / various domestic and foreign serial or 485
interface PLC, RTU achieve wireless data transmission, etc.