Short Description:

Ennfu® RTU400 series cellular RTU unit with GPS and Lte cat m1 &NB1&2G support, feature with RS485 and CAN ports. can fully support standard Modbus protocol, CAN protocol communicate with the host,DC8~36VDC input.


This module based on U-blox sara r4 series and max m8q module, can be widely used into any M2M iot applications,like as industrial data remote monitoring and control system, cold chain temperature remote control system.

All ports had being opotocoupled, that bring more safe and security to the industries.


LTE400 series cellular RTU featuring a web-based event engine that can trigger built-in I/O or send SMS text messages based on real-time operational data, can perform advanced control and communications for monitoring and controlling remote assets and processes in extreme conditions.



UBlox sara r4series is a global coverage cellular module, high compatible with lte cat m1,nb1 or 2G OR EGPRS, you can follow the destination region to select the related cellular module, and very easy to exchange each other for it pin to pin.that mean no need change the pcb layout to upgrade into let-m network, nb network or even 5G network.



Natively supporting Modbus, CAN and MQTT protocols.



Designed to deliver secure communications to remote locations, our industrial cellular RTUs support robust security features such as VPN tunnels, port forwarding, stateful firewall, packet filtering, data encryption and an Access Control List (ACL).

Product Detail

Full Specification ▶

IoT Device

GPS Ublox MAX M8Q  Professional Grade
LTE-m UBlox Sara R410M-02B OR R412M-02B or G350 or U201
LTE Frequency Bands * SARA-R410M-02B LTE module For multi-regional use;Cat M1/NB1 deployed bands:2, 3, 4, 5, 8, 12, 13, 20, 28
* SARA-R412M-02B LTE, 2G moduleFor multi-regional use;Cat M1/NB1 deployed bands:2, 3, 4, 5, 8, 12, 13, 20;EGPRS quad-band, 850/900/1800/1900 MHz


72-Channel u-blox M8 engine,-Industry leading -167dBm navigation sensitivity;GPS/QZSS L1 C/A, GLONASS L1OF,BeiDou B1I, Galileo E1B/C,SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN

Positioning Accuracy

Autonomous 2.5 m CEP
Weight 80g
Screw connectors 4* 3pin,5.08mm spacing

Power supply


Storage Temp.

-40°C to +85°C

Operation Temp.

-20°C to +65°C

Working humidity


Product Features

  •     -   DIN module design;
  •      -  Lte cat m1&nb1&2G or EGPRS, multi-regional
  •      -  Up to 2.5metes positioning accuracy;
  •      -  GNSS/GSM LTE antenna ipex on board;
  •      -  Support Nano Sim card, compatible with eSim;
  •      -  Ultra power consumption ability;
  •      -  RS485, CAN ports with optocouples
  •      -  Embedded HTTP/TCP/MQTT protocol to server
  •      -  Modify IP and port via SMS
  •      -  API to cloud server
  •      -  8V~36VDC
  •      -  OTA support

Typical Applications


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