Atom DTU NB IoT2

SKU:K059-B

Description

ATOM DTU NB2 is a programmable wireless data transmission unit (DTU) suitable for global Cat-NB bands, specifically designed for NB-IoT applications. It features an integrated SIM7028 communication module and utilizes serial communication (controlled via AT command set). The unit includes an SMA external antenna interface, significantly enhancing communication quality and signal stability. The SIM7028 module supports most Cat-NB bands, ensuring broad applicability worldwide. Unlike typical DTUs that only provide data transmission functionality, the ATOM DTU series adopts a more open architecture. The controller, ATOMS3 LITE, allows for program modifications based on actual business needs. The unit reserves various interfaces (RS485, I2C, custom interfaces) for user expansion, facilitating quick integration of sensors and actuators. It also comes with a rail mounting structure, making it ideal for embedding in various industrial control environments. ATOM DTU NB2 is perfect for low-latency, low-throughput application scenarios such as remote control, asset tracking, remote monitoring, telemedicine, and shared bicycles.

Product Features

• Adapt AtomS3/AtomS3 Lite/Atom matrix/Atom Lite
• Global version/multi-band support
• Strong signal access capability
• AT command control
• SIM card type: Micro SIM
• External antenna: SMA antenna
• Serial communication: UART 115200bps
• Data transmission (kbps): 127(DL)/159(UL)
• Supports multiple network protocols
• Multiple certifications including radio, environmental, and carrier standards
• Multiple power supply options

Package Includes

• 1x ATOM DTU2-NB-IOT2 Base
• 1x AtomS3 Lite
• 1x Stick Antenna (2.5dBi total length 110mm SMA inner needle)
• 1x SMA Antenna Red Cap
• 1x M2 Hex Wrench
• 1x M2x16 Screw
• 1x HT3.96-4P Terminal

Applications

• Asset tracking
• Remote monitoring/control
• Shared bicycles

Certifications

Radio and Communication Equipment Certifications

• SRRC, NAL, CE-RED, GCF, CCC

Safety and Environmental Certifications

• CCC, RoHS, REACH

Carrier Certifications

• Deutsche Telekom, Vodafone, Telefonica, China Telecom, China Mobile, China Unicom

Specifications

Related Links

• SIM7028_Specification
• SIM7028 Series_Network Searching_Application Note_V1.00
• SIM7028 Series_Low Power Mode_Application Note_V1.01
• SIM7028_NCC_Certificate_20230421
• SIM7028 Series_TCPIP_Application Note_V1.04
• SIM7028 Series_SSL_Application Note_V1.00
• SIM7028 Series_MQTT(S)_Application Note_V1.03
• SIM7028 Series_LwM2M_Application Note_V1.02
• SIM7028 Series_HTTP(S)_Application Note_V1.04
• SIM7028 Series_FOTA_Application Note_V1.00
• SIM7028 Series_COAP_Application Note_V1.00
• NB-EVB_User_Guide_Manual_V1.00
• RSU062-EE-EUT Photo-SIM7028
• RSU062-E6-CE EMC Test Report
• RSU062-E5-3GPP (LTE Band 5) Test Report

AT Command

• SIM7028 Series_AT Command Manual_V1.00

Schematic

PinMap

Product Test Data

RS485 Communication Test (Test conditions: 120Ω terminal resistance added)

Antenna VSWR

Power Consumption Test

Module Size

Examples

Arduino

• Atom DTU-NB-IoT2 Library for Arduino
• Atom DTU-NB-IoT2 Library for PlatformIO

• PlatformIO adds library file dependencies as follows:

lib_deps = 
    m5stack/M5Unified@^0.1.13
    m5stack/M5AtomS3@^1.0.0
    fastled/FastLED@^3.6.0
    knolleary/PubSubClient@^2.8
    vshymanskyy/StreamDebugger@^1.0.1
    https://github.com/m5stack/TinyGSM/archive/refs/tags/v0.12.0-patch-1.zip
    arduino-libraries/ArduinoHttpClient@^0.6.0
    bakercp/CRC32@^2.0.0

• The Arduino installation library file is shown in the following figure:

Version Comparison

Video