RS485-NB
RS485/UART to NB-IoT Converter
The Dragino RS485-NB/NS is a RS485 / UART to NB-IoT Converter for Internet of Things solutions. User can connect RS485 or UART sensor to RS485-NB/NS converter, and configure RS485-NB/NS to periodically read sensor data and upload via NB-IoT network to IoT server. RS485-NB/NS can interface to RS485 sensor, 3.3v/5v UART sensor or interrupt sensor. RS485-NB/NS provides a 3.3v output and a 5v output to power external sensors. Both output voltages are controllable to minimize the total system power consumption. RS485-NB/NS supports different uplink methods including MQTT, MQTTs, UDP , TCP or CoAP for different application requirement, and support uplinks to various IoT Servers.
Features
- NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
- Ultra-low power consumption
- Support multiply RS485 devices by flexible rules
- Support Modbus protocol
- Support Interrupt uplink
- Supports connecting a UART sensors with 3.3V or 5V
- Multiply Sampling and one uplink
- Support Bluetooth v5.1 remote configure and update firmware
Thermal Anemometer
Range: 0~5/10/30m/s
1000mAh Rechargeable Battery
External DC power adapter
wireless OTA update firmware
Application guide
Choose the airflow range by deployment scenario
0–5 m/s range
Cold Storage & Display Cases
For supermarket chillers, refrigerated display cases, cold storage deadzone detection, VAV terminals, and clean rooms.
0–10 m/s range
HVAC Ducts & AHU Verification
For HVAC supply or extract ducts, filter pressure-drop monitoring, and air handling unit performance checks.
0–30 m/s range
Industrial Ventilation & Fan Outlets
For main duct airflow, fan outlets, compressed air systems, and industrial ventilation monitoring.
How it works
Remote airflow monitoring via LoRaWAN
Deploy AirFlow-LN at critical airflow points, transmit measurements through a LoRaWAN gateway, and use platform data to detect weak airflow, filter problems, or abnormal ventilation conditions earlier.
- AirFlow-LN measures airflow in ducts, refrigeration, or ventilation points.
- LoRaWAN gateway receives data from distributed sensors across the site.
- Cloud platform visualizes trends and helps trigger maintenance decisions.
Product inquiry
Need help choosing the right RS485-NB?
Contact us for RS485-NB pricing, datasheet, deployment advice, or integration support.