The hydrometeorological station is used to monitor the hydrological parameters of rivers, lakes, reservoirs, channels and groundwater in real time, and timely reflect the hydrological characteristics of each water area so that relevant departments can finalize to forecast, prevention and mitigation of natural hazards. In this kind of application, the wireless connecitivy is proper and suitable one for wide range and remote access, especially for cellular connection.

In this application, MLiS LTE router MLB-G4203-2 is the core to achieve remote access, it connects to CR300 over RS485, this data logger is a multi-purpose, compact measurement and control data logger which can measure most hydrological, meteorological, environmental, and industrial sensors. As CR300 record these data about enviornment, MLB-G4203-2 can send these to data to internet, meanwhile, it also map COM by MLiS Virtual COM, by this way, users can open com port to monitor on theor Platform remotely
The IoT router MLB-G4203-2 series brings serial and wireless LAN data to the cellular network. It supports LTE/NBIoT to wireless LAN redundancy and LTE/WLAN auto offload to optimize network performance. The RS232/422/485 port connects to meters, sensors, or Modbus RTU devices to send data to the remote cloud center over the cellular or WLAN network by Modbus TCP or Secured MQTT (MQTTS).