
- 4G LTE Cat 1
- Mobile network, 2G fallback
- RS485 + Ethernet
- Modbus RTU and Modbus TCP
- 9 to 24 VDC
- Supply voltage
- -20 to 60 °C
- Operating temperature
Overview
Where it works
GWU-5 is a DIN-rail communication gateway. 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. It has 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

Street lighting
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
EIM
Electrical infrastructure monitoring
Sensors, analysers and a gateway turn a secondary substation into a monitored asset. The platform shows the transformer and the low-voltage board in real time, with alarms and reports for the grid operator.
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.
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