RS485-CB -- RS485/UART to NB-IoT//LTE-M Converter

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RS485-CB -- RS485/UART to NB-IoT//LTE-M Converter

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The Dragino RS485-CB is a RS485 / UART to NB-IoT/LTE-M Converter for Internet of Things solutions. User can connect RS485 or UART sensor to RS485-CB converter, and configure RS485-CB to periodically read sensor data and upload via NB-IoT/LTE-M network to IoT server.

RS485-CB can interface to RS485 sensor, 3.3v/5v UART sensor or interrupt sensor. RS485-NB 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-CB supports different uplink methods including MQTT, MQTTs, UDP, TCP or CoAP for different application requirement, and support uplinks to various IoT Servers.

RS485-CB supports BLE configure and OTA update which make user easy to use.

RS485-CB is powered by 8500mAh Li-SOCI2 battery, it is designed for long-term use up to severa years.

RS485-CB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.

Features:

For -NB Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85
For -CB Bands: B1/B2/B3/B4/B5/B8/B12/B13//B18/B19/B20/B25/B28/B66/B71/B85
CAT-M1 / LTE-M Bands: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85
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
GNSS for Location Report
Support Bluetooth v5.1 remote configure and update firmware
Uplink via MQTT, MQTTs, TCP, UDP or CoAP
Uplink on periodically
Downlink to change configure
8500mAh Battery for long term use
Nano SIM card slot for NB-IoT SIM

Applications:

Smart Buildings & Home Automation
Logistics and Supply Chain Management
Smart Metering
Smart Agriculture
Smart Cities
Smart Factory

Specifications:

Common DC Characteristics:

Supply Voltage: 2.6v ~ 3.6v
Operating Temperature: -40 ~ 85°C

I/O Interface:

Battery controllable output (2.6v ~ 3.6v depends on battery)
+5v controllable output
1 x RS485 Interface
1 x UART Interface , 3.3v or 5v
1 x Interrupt or Digital IN/OUT pins
1 x I2C Interface
1 x one wire interface

NB-IoT Spec:

NB-IoT Module: BC660K-GL

Support Bands:

B1 @H-FDD: 2100MHz
B2 @H-FDD: 1900MHz
B3 @H-FDD: 1800MHz
B4 @H-FDD: 2100MHz
B5 @H-FDD: 860MHz
B8 @H-FDD: 900MHz
B12 @H-FDD: 720MHz
B13 @H-FDD: 740MHz
B17 @H-FDD: 730MHz
B18 @H-FDD: 870MHz
B19 @H-FDD: 870MHz
B20 @H-FDD: 790MHz
B25 @H-FDD: 1900MHz
B28 @H-FDD: 750MHz
B66 @H-FDD: 2000MHz
B70 @H-FDD: 2000MHz
B85 @H-FDD: 700MHz

Battery:

Li/SOCI2 un-chargeable battery
Capacity: 8500mAh
Self Discharge: <1% / Year @ 25°C
Max continuously current: 130mA
Max boost current: 2A, 1 second

Power Consumption:

STOP Mode: 10uA @ 3.3v
Max transmit power: This email address is being protected from spambots. You need JavaScript enabled to view it.

Part Number: RS485-CB-XX-YY

XX:

GE: General version ( Exclude SIM card)
1T: with 1NCE * 10 years 500MB SIM card and Pre-configure to ThingsEye server

YY: The grand connector hole size

M12: M12 hole
M16: M16 hole

Last modified on 04 March 2025