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InDTU324 Industrial Cellular Modem
Compact Design, Reliable Serial to Cellular Communication

The InDTU324 cellular modem provides wireless data communications between field serial devices and the central control system to enable remote control of industrial field sites.


Featuring rugged design, small form factor, high reliability and easy-to-use features, the InDTU324 is ideal for M2M and IoT applications including distribution automation, smart metering, water & wastewater, heating, street light monitoring and etc. It is available with LTE CAT 4, CAT M1, CAT NB1, and EGPRS globally.  

Overview Applications Specifications Documentation Part Numbers
Industrial Design

            

 Small form factor  

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

Wide voltage input: 5~35VDC 

Metal housing, IP30 protection 

Compact-sized, easy to fit and integrate 

CE, FCC certified

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Highly-reliable Wireless Communications


Self-recovery: embedded watchdog, self recover from faults, ensuring normal operation of the device

● Link redundancy: SMS and 4G/3G/GPRS link mutual backup to ensure continuous data transmission

● Link detection: multi-layer link detection mechanisms including PPP layer heartbeat, ICMP detection, TCP Keepalive and application layer heartbeat, keeping wireless connection "always on"

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Easy and Flexible to Manage

Support configuration software login via local serial port

Support RTOOL remote configuration over TCP/IP

Support remote batch management via InHand Device Manager cloud

 Support SMS configuration 

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Rich Functions for Intelligent Solutions

● Modbus RTU/Modbus TCP protocol conversion for industrial SCADA systems and field devices 

Support IEC101/IEC104 conversion (coming soon)

● Support transparent TCP/UDP protocol

● Support InHand DC protocol

● Support user-defined TCP/UDP hearbeat and login data 

● Support multi-center, 1-5 centers


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Applications
Specifications    
InDTU324 Specifications    
Items                    InDTU324L                    
Network Connection                    
Internet Access                    

APN, VPDN                        

Authentication                    CHAP/PAP                    

Network Type                        

4G/3G/GPR                        

Network Protocol                        

Network Protocol                        

Ping, DNS, transparent TCP/UDP, InHand DC TCP/DC                        

UDP, user-defined login/heartbeat data packet                        

Protocol Conversion                        

Modbus RTU/TCP protocol conversion                        

Network Security                        

Multi-level Authorization                        

User levels: administrator, maintenance staff                        

Certification Security                        

Supports login security certification                        

Reliability                    

Reliable Upgrade                        

Patent upgrade mechanism, ensures reliable upgrade                        

Link Connection Detection                        

Sends heartbeat packet detection, auto connect once disconnected                        

Embedded Watchdog                        

Device operation self-detection technology, and self-recovery from operation faults                        

Network Management                        

Configuration Method                        

Local serial port, RTool, InHand Device Manager, SMS (InDTU324L only)                         

Configuration Backup                        

Supports import and export of configuration files                        

Upgrade Method                        

Patent upgrade mechanism, upgrade firmware through local serial port or remotely                        

Log                        

Supports local and remote viewing of logs, facilitate engineers to check device operating status                        

Dial-on-Demand                        

Data activation, timed on/off,  SMS activation (depends on the carrier's platform), phone activation (InDTU324L only)                        

Network Management                        

Supports InHand Device Manager remote central management                        

Interface                    

Serial Port                        

2 x Logic serial ports:
Serial port 1: RS-232/485 (Optional)
Serial port 2: RS-232
                       

RS-232 signal: TXD, RXD, GND
RS-485 signal: 485+, 485-, GND
                       

10 PIN industrial terminal, 3.5mm pitch                        

SIM Card Slot                        

1.8V/3V, drawer-type slot                        

Antenna                        

50Ω / SMA x 1                        

Mechanical Properties                        

Installation                         

Wall-mounting                        

Protection                         

IP30                        

Cooling                        

Fanless                        

Housing                        

Metal                        

Power Supply                        

Power Input                        

DC5-35V                        

Power Interface                        

Pluggable industrial terminal connection                        

Polarity Reverse Protection                        

Supported                        

Overload Protection                        

Supported                        

Consumption (@12V)                        

InDTU324L: 12mA (Standby), 50mA (Working), 200mA (Starting), 200mA (Starting)                        

InDTU324N: 15mA (Standby), 25mA (Working), 200mA (Starting), 200mA (Starting)                        

Environment                        

Operating Temp.                        

-40 ~ 70℃                        

Storage Temp.                        

-40 ~ 85℃                        

Ambient Humidity                        

5 ~ 95% (non-condensing)                        

LED Indicators                        

LED                    

POWER, SIM, STATUS                        

EMC Index                        

Static                        

EN61000-4-2, level 2                        

Surge                        

EN61000-4-5, level 2                        

Shock Wave Immunity                    EN61000-4-12, Level 2                    

Certifications                        

CE

Documentation
Part Numbers    

ModelInDTU324

InDTU324LQ25-232                   

Europe and Asia Pacific -LTE CAT4 

LTE FDD: B1/B3/B7/B8/B20/B28A 

WCDMA: B1/B8 

GSM: B3/B8


RS-232, single SIM                

InDTU324LQ25-485  

Europe and Asia Pacific -LTE CAT4 

LTE FDD: B1/B3/B7/B8/B20/B28A 

WCDMA: B1/B8 

GSM: B3/B8


RS-485, single SIM                        

InDTU324NQ96-232

(*Coming soon)                   

Europe and Asia Pacific - Cat M1/Cat NB1/EGPRS

LTE FDD:B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B26/B28 

LTE TDD: B39 (for Cat M1 only) 

EGPRS:850/900/1800/1900MHz


RS-232, single SIM                

InDTU324NQ96-485

(*Coming soon)

                    

Europe and Asia Pacific - Cat M1/Cat NB1/EGPRS

LTE FDD:B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B26/B28 

LTE TDD: B39 (for Cat M1 only) 

EGPRS:850/900/1800/1900MHz


RS-485, single SIM                

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