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InDTU332 Industrial Cellular Modem
Reliable data transmission over 4G/3G/2G networks

With a high-reliability communication module, robust PPP, TCP/IP and application layer protocol suite and optimized network specs, especially narrow band link specs, the InDTU series sports outstanding performance on wireless communications.

Overview Applications Specifications Documentation Part Numbers
Compatible with 4G/3G/2G Networks

The InDTU builds TCP/IP based wireless transmission channels over 2G/3G/4G networks to carry out data communication between serial devices at remote stations and central controlling systems, to enable remote control of field devices.

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Rugged Industrial Modem

Industrial-grade InDTU332 can withstand harsh conditions like extreme temperatures, dusty conditions, voltage fluctuations, etc. There are more than 500,000 units of InDTU332 are running reliably in distribution automation and industrial fields.                  


Industrial-grade chip of ultra-low power consumption, adaptable to various power supply modes 

Wide operating temperature: -40°C~70°C

Wide voltage input: 5~35VDC 

Solid housing, IP30 protection 

Compact-sized, easy to fit and integrate 

CE, FCC certified

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Highly-reliable Wireless Communications

With a high-reliability communication module, robust PPP, TCP/IP and application layer protocol suite, and optimized network specs especially narrow band link specs, the InDTU332 delivers outstanding performance on wireless communications. 


Built-in watchdog, self-recover from hardware faults 

Link redundancy mechanism to maintain continuous data transmission 

PPP layer heartbeat detection to maintain network connection 

● TCP layer heartbeat detection to maintain the connection to application server

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Easy and Flexible to Manage

Local configuration and upgrade through serial port 

Local configuration with handheld device 

Support SMS configuration 

Support configuration through remote TCP/IP access 

Support InHand Device Manager platform for central remote management

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Functions for Intelligent Solutions

Support protocol conversion between Modbus RTU and Modbus TCP 

Support protocol conversion between IEC 101 and IEC 104 

Support transmission optimization (DC protocol) 

Support multiple (1~5) centers

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Applications
Specifications    
InDTU332 Specifications    
ItemsInDTU332LInDTU332WInDTU332G
Software                    Network                    Internet Access                    LTE/WCDMA/TD-SCDMA/GPRS, DDN(APN)/VPDN                    WCDMA/GPRS, APN/VPDN                    GSM/GPRS, APN                    
Authentication                    CHAP/PAP/MS-CHAP/MS-CHAPV2                    
Cellular                    

TDD LTE: Band 38/39/40/41                        

FDD LTE: Band 1/3/8                        

HSPA+/HSPA/UMTS: Band 1/5/8/9                        

TD-SCDMA: Band 34/39                        

GPRS/EDGE: 900/1800 MHz                        

GPRS/EDGE: 900/1800 MHz                        

WCDMA/HSPA: 900/2100MHz                        

GPRS 900/1800 MHz(China)                         

GPRS 850/900/1800/1900 MHz(Global)                        

Protocols                    IP/ICMP/PPP                    
TCP/UDP                    
InHand DC TCP/DC UDP                    
TCP/UDP, user define TCP/UDP login, Heartbeat packets                    
TCP server to establish a TCP connection with the InDTU                    
Domain Name Service                    
1~5 servers                    
Protocol Conversion                    Modbus RTU/TCP                    
IEC 101 to SMS (optional)                    
IEC 101 to 104 conversion (optional)                    
Security                    

Management
Security
                       

Multi-Level authentication: admin, maintenance                    
Login authentication                    
Reliability                    Upgrade                    Patented secure upgrade process                    
Link Detection                    PPP,ICMP,TCP Keepalives, automatic recover from failure                    
Watchdog                    Self-diagnostics, automatic recovery from failure                    

Network                         

Mgmt.                        

Automatic Dial up                    Automatic dial up when powered on                    
On-demand Dial up                    Long  connection, short connection, activate by data, SMS,  phone; scheduled online/offline                    
Configuration                    Support RS-232 serial port configuration, RTools, InHand Device Manager Cloud, SMS text  messages                    
Upgrade                    Upgrad via serial port or remotely                    
Log                    Local syslog, remote logs, export logs via serial port                    
Centralized Management                    InHand Device Manager cloud-based centralized device management platform                    
Config. Backup                    Configuration file import and export                    
Hardware                    Interface                    SIM                    USIM/SIM card: 3V/1.8V, flip card holder                    

WCDMA USIM/SIM card: 3V/1.8V, flip card holder                        

GPRS card: 3V, flip card holder                        

Industrial Serial                    

2*Serial Ports: 1*RS232/RS485 and 1*RS232
8-pin, 3.81mm industrial terminal
Baud Rate: 1200~115200bps
Data  Format: 8 bit, 1 stop, none parity, no flow control
                       

Antenna                    50Ω, SMA Female                    
Power Consumption                    Power Supply                    +9~35V DC                    +9~35V DC                    +5~35V DC                    
Standby                    90mA@12V                    70mA@12V                    8~14mA@12V                    
Working                    93mA@12V                    73mA@12V                    35~55mA@12V                    
Power on                    156mA@12V                    < 100mA@12V                    < 100mA@12V                    
Peak                    156mA@12V                    < 100mA@12V                    < 100mA@12V                    
Environmental                    Operating temp                    -40℃~70℃                    
Storage temp                    -40℃~85℃                    
Humidity                    5 to 95% (noncondensing)                    
Mechanical                    Housing                    ABS engineered plastic shell                    
Dimensions (mm)                    110x85x35mm                    
Installation                    Hanger mounting                    
EMC                    ESD Electrostatic Discharge Immunity                    IEC61000-4-2, Level 3                    
Surge Immunity                    IEC61000-4-5, Level 3                    
Oscillatory Wave Immunity                    IEC61000-4-12, Level 3                    
Documentation
Part Numbers    
Model InDTU332
Part Number                    

InDTU332< N >-< S >                        

N (Cellular Type) GS52 (China)                     GPRS/GSM: 900/1800MHz                     2.5G                    

GS55 (Global)                        

GPRS/GSM: 850/900/1800/1900MHz
                       

WS05 (China)                    

UMTS/HSPA: 900/2100MHz
EDGE/GPRS/GSM: 900/1800MHz
                       

3G                    

WS15 (North America)                        

UMTS/HSPA: 850/1900MHz
EDGE/GPRS/GSM: 850/1900MHz
                       

WS25 (Europe)                        

UMTS/HSPA: 900/2100MHz
EDGE/GPRS/GSM: 900/1800MHz
                       

LH09 (China)                        

FDD LTE: Band 1/3/8
TDD LTE: Band 38/39/40/41
TD-SCDMA: Band 34/39
UMTS/HSPA+: Band 1/5/8/9
EDGE/GPRS/GSM: 900/1800MHz
                       

4G

S (Serial Type)                        

232: RS232
485: RS485                        

Example                    

InDTU332WS15-232: for North America, support 3G, RS232 serial port                        

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