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CONTENTS

ATOM DTU NB

SKU:K059

Description

ATOM DTU NB is a programmable data transmission unit (DTU) that integrates NB-IoT communication functions. The built-in SIM7020G module covers most of the Cat-NB frequency bands and integrates the SMA external antenna interface to improve the communication quality and signal stability of the device. Unlike the DTU, which generally only has the function of data transparent transmission, the ATOM DTU series adopts a more open architecture design. The controller ATOM LITE can modify the program at will according to the actual business, and the whole machine reserves a variety of interfaces (RS485, I2C, custom interface) for users to expand, which is convenient for the rapid access of sensors and actuators. The self-contained guide rail clamping structure is perfectly embedded in various industrial control sites. ATOM DTU NB is very suitable for various low-latency, low-throughput application scenarios (such as remote control, asset tracking, remote monitoring, remote medical treatment, shared bicycles, etc.).

Product Features

  • SIM7020G/Global version/Multi-band support

  • RS485 communication interface (with 12V input interface, internal integrated DCDC step-down 5V)

  • Modbus Master/slave

  • Strong signal access capability

  • AT command control

  • SIM card type: MicroSIM

  • External antenna: SMA antenna interface

  • Grove expansion interface:

    • I2C x1
    • Custom x1

  • Serial communication: UART 115200bps

  • Self-contained rail clamping

  • Cat-NB frequency band:

    • B1/B2/B3/B4/B5/B8/ B12/B13/B17/B18/B19/ B20/B25/B26/B28/ B66/B70/B71/B85

  • Data transmission (kbps):

    • 126(DL)/150(UL)

  • Network protocol:

    • TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS

Includes

  • 1x ATOM LITE
  • 1x ATOM DTU NB
  • 1x SMA antenna
  • 1x SMA red cap
  • 1x M2 hexagon wrench
  • 1x M2x16 screw
  • 1x 3.96-4P terminal

Application

  • Smart meter
  • Remote monitoring
  • Shared bicycles

Certification

  • RoHS/REACH/RCM/Telstra/CE(RED)/GCF/ATEX/TIM/Deutsche Telekom/Vodafone/FCC/PTCRB/T-Mobile/IC

Operator certification

  • Telstra*/Vodafone/Deutsche Telekom

Specifications

Resources Parameter
Module SIM7020G
Support Cat-NB frequency band B1/B2/B3/B4/B5/B8/ B12/B13/B17/B18/B19/ B20/B25/B26/B28/ B66/B70/B71/B85
Network protocol TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS
communication UART 115200bps
Net weight 32g
Gross weight 40g
Product Size 64 * 24 * 29mm
Package Size 91 * 42 * 24.5mm

Pin mapping

  • SIMCOM7020G
ATOM G22(TX) G19(RX) 5V GND
SIMCOM7020G RX TX VIN GND
  • RS485
ATOM G23 G33 5V GND
RS485 TX RX VIN GND
  • I2C
ATOM G25 G21 5V GND
I2C SDA SCL VIN GND

Schematic

Example

Arduino

UIFLow

UIFlow1.0 UIFlow1.0 Atomic dtu_nb_iot Docs
UIFlow1.0 Atomic dtu_nb_iot Docs
How to use Atomic dtu_nb_iot and related API instructions in the UIFlow1.0

Usage

Connect to the MQTT server to implement message subscription and publishing. When a new subscription message is received, the callback function will be called and the topic name and data content will be passed, and the output result will be printed to the USB serial port.

Video