
- Mobile network, 2G fallback
- 4G LTE Cat 1
- Modbus RTU and Modbus TCP
- RS485 + Ethernet
- Supply voltage
- 9 to 24 VDC
- Operating temperature
- -20 to 60 °C
Overview
Where it works
GWU-5 is a DIN-rail communication gateway that runs GridBit OS. It reads the devices on an RS485 Modbus RTU bus and Modbus TCP devices on the LAN port, and connects them to the GridBit platform over 4G LTE Cat 1, 2G or Ethernet. When the connection drops, it keeps the data it has read and sends it once the connection is back. It also has Wi-Fi and Bluetooth, one digital input, and runs on 9 to 24 VDC.
Mounting: 35 mm DIN rail (IEC 60715)
- Connecting Modbus meters, controllers and sensors to a central system over the mobile network
- Street lighting cabinets, transformer stations, pump stations and other remote sites
- Building your own IoT system on a gateway that GridBit manages remotely
Datasheet
Technical data
Power supply
- Supply voltage
- 9 to 24 VDC
- Consumption
- max. 150 mA
Digital inputs
- Number
- 1
- Type
- IEC 61131-2 Type 1
Modbus RTU
- Interface
- RS485
- Protocol
- Modbus RTU
- Baud rate
- 9600, 19200, 38400, 57600default 9600
- Parity
- 8N1, 8E1, 8O1, 8N2default 8N1
Modbus TCP
- Interface
- Ethernet (LAN)
- TCP port
- 502default
Mobile network
- Standard
- 4G LTE Cat 1 (FDD/TDD), 2G (GSM/GPRS/EDGE)
Environment
- Operating temperature
- -20 to 60 °C
- Storage temperature
- -20 to 80 °C
- Relative humidity
- below 95 %, non-condensing
Status LEDs
- POWOnInput voltage present
- COMBlinkingConnecting to the mobile operator
- COMOnConnected to the platform
- DI1OnDigital input 1 closed
- MBOnA device on the Modbus bus is missing or faulty
Systems
Used in

Fleet management
GridBit Cloud
Cloud management for fleets of industrial gateways: self-activation, over-the-air updates, alarms and remote access, with no access to your production data.
Learn more
Electrical infrastructure digitalization
GridBit street lighting management
Control and monitor street lighting cabinets from one system, with schedules that follow sunrise and sunset, measurements per phase and alarms for every cabinet.
Learn more
Electrical infrastructure digitalization
GridBit MV/LV transformer monitoring
Temperature, load and alarms of the MV/LV transformer in a secondary substation, in real time. Sensors and a gateway go into the existing substation without changing the primary equipment.
Learn more
Electrical infrastructure digitalization
GridBit LV switchgear monitoring
Current, voltage, power and power quality on every phase of the low-voltage board, and the state of each outgoing feeder, fuse and protection, from DIN-rail Modbus modules and one gateway.
Learn moreTransport, warranty and maintenance
- Transport and storage
- Protect the module from shocks and avoid extreme conditions. Store it in the original packaging.
- Warranty
- Two years from the date of manufacture against manufacturing defects. Modifications to the product after the publication date of its documentation release the manufacturer from liability. The manufacturer is not responsible for typographical or other errors in the documentation.
- Maintenance
- Under normal conditions the module needs no maintenance. Light dirt comes off with a dry or slightly damp cloth; for heavier dirt use non-aggressive cleaning products. Always disconnect the power supply first, keep liquids out of the housing and reconnect the power only when the module is completely dry.
Ask for a GWU-5 quote
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