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RDI411A

1. Introduction

1.1 Description


RDI4/811A is a DTU of RS485-LoRaWAN with highly flexible configuration and low power consumption independently developed by ManThink Technology Co Ltd. It is embedded with a high-performance MCU of NXP and a Radio chip SX127x of Semtech. It can get data from several slave devices by RS485  and uploading data to platform through LoRaWAN network.Users can quickly and flexibly configure DTU's working mode as needed,and quickly occupy the market.

1.2 Applications

RDI4/811A is suitable for sensors with MBUS interface, and uploading large data frequently,such as the collection of water and electricity meters.

1.3 Features

  • Supports NMS configuration and management
  • Support remote upgrade by FUOTA
  • Support heartbeat function
  • RS485 interface to sensor
  • Global ISM band support: EU433/CN470/EU868/KR920/AS923
  • Supports multiple power supply modes

1.4 product appearance


2. Charactoristics

2.1 Interface


Name

Defined

RS-485A

RS-485A

RS-485B

RS-485B

NC

Reserved Port

NC

Reserved Port

GND

GND

VOUT

3.3V output

GND

GND

+ 5V_IN

5V input

Power

12V input

Type-c

The debugging interface downloads the TLS file to implement DTU parameter modification, testing, and other instructions.

LoRa Antenna interface

Connect LoRa antenna

PWE

LED indicator for power,light on when it is powered on

RUN

LED indicator for system application run status. It blinks in one  second when the system is running normally.

RX

LED indicator for RS485,It blinks when RDI511A is receiving data from RS485.

TX

LED indicator for RS485,It blinks when RDI511A is sending data to RS485.

BH

LED indicator for uplink or downlink,it will blink once when  RDI511 sending data  or receiving data by LoRaWAN.

4G

Retention

2.2. Electrical charactoristics

Operating voltage

DC 5V/12V

Operating temperature

-40℃ ~ 85℃

Working humidity

0%~95%RH

Protection level

IP53

ESD(Human Body Model)

2000V

2.3. Radio charatoristics

Working frequency

EU433/CN470/EU868/KR920/AS923

Stepping frequency

1kHz

Transmitting power

5 ~ 20dBm

Reception sensitivity

-139dBm @292bps

Air transmission rate

292bps~5.4kbps

Emission current typical value

90mA @22dBm

Harmonic suppression

≤1GHz:<-36dBm, >1GHz:< -30dBm

CAD/received Current (typical value)

7mA

Sleep current typical value

3μA

Antenna Impedance

50Ω

2.4. Dimensions

Size: 97mm * 90mm * 24mm