The InDTU332 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, high reliability and easy-to-use features, the InDTU332 is ideal for M2M and IoT applications including distribution automation, smart metering, water & wastewater, heating, street light monitoring and etc.
| InDTU332 Specifications | |
| Network Connection | |
| Internet Access | APN, VPDN |
| Authentication | CHAP/PAP |
| Network Type | GPRS or eMTC/NB-IoT(LTE Cat M1/NB1) |
| 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 | Support login security certification |
| Reliability | |
| Reliable Upgrade | Patent upgrade mechanism, ensures reliable upgrade |
| Link Connection Detection | Send 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 (InDTU332G only) |
| Configuration Backup | Support import and export of configuration files |
| Upgrade Method | Patent upgrade mechanism, upgrade firmware through local serial port or remotely |
| Log | Support local and remote viewing of logs, facilitate engineers to check device operating status |
| Dial-on-Demand | Data activation, timed on/off, SMS activation, phone activation (InDTU332G only) |
| Network Management | Support 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 | |
| 8 PIN industrial terminal, 3.81mm pitch | |
| SIM Card Slot | 1.8V/3V, card slot |
| Antenna | 50Ω / SMA x 1 |
| Mechanical Properties | |
| Installation | Wall-mounting |
| Protection | IP30 |
| Cooling | Fanless |
| Housing | ABS engineering plastics |
| Power Supply | |
| Power Input | DC5-35V |
| Power Interface | Pluggable industrial terminal connection |
| Polarity Reverse Protection | Support |
| Overload Protection | Support |
| Consumption (@12V) | InDTU332G: 10mA (Standby), 40mA (Working), 45mA (Peak) |
| InDTU332N: 16mA (Standby), 30mA (Working), 160mA (Peak) | |
| Environment | |
| Operating Temp. | -40 ~ 70℃ |
| Storage Temp. | -40 ~ 85℃ |
| Ambient Humidity | 5 ~ 95% (non-condensing) |
| LED Indicators | |
| LED | POWER, MODULE, SIM, STATUS |
| EMC Index | |
| Static | EN61000-4-2, level 3 |
| Surge | EN61000-4-5, level 3 |
| Shock Wave Immunity | EN61000-4-12, Level 3 |
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