Atom DTU NBIoT2

SKU: K059-B

Description

Atom DTU NBIoT2 is a programmable wireless data transmission unit (DTU) suitable for global Cat-NB frequency bands. It features a built-in SIM7028 communication module, uses serial communication (controlled via AT commands), and integrates an SMA external antenna interface, significantly improving communication quality and signal stability. The SIM7028 module covers most Cat-NB frequency bands, ensuring wide applicability worldwide. Unlike general DTUs that only support data passthrough, the Atom DTU series adopts a more open architecture design. The AtomS3-Lite controller allows users to modify the program according to actual business needs, and the device provides multiple interfaces (RS485, I2C, custom interfaces) for user expansion, facilitating quick integration of sensors and actuators. The built-in rail clamping structure allows it to be seamlessly embedded into various industrial control environments. Atom DTU NBIoT2 is ideal for low-latency, low-throughput applications such as remote control, asset tracking, remote monitoring, telemedicine, and shared bikes.

Features

• Compatible with 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 for radio, environmental, and carrier standards
• Multiple power supply methods

Includes

• 1 x AtomS3-Lite
• 1 x Atomic DTU NBIoT2
• 1 x Rubber antenna (2.5dBi, total length 110mm, SMA inner pin)
• 1 x SMA antenna red cap
• 1 x M2 hex wrench
• 1 x M2x16 screw
• 1 x HT3.96-4P terminal

Applications

• Asset tracking
• Remote monitoring/control
• Shared bikes

Specifications

RS485 Communication Test

• Test conditions: AB with 120Ω terminal resistor

Power Consumption Test

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

Schematics

• Atom DTU NBIoT2 Schematics PDF

1/1

PinMap

Model Size

Datasheets

• 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

Softwares

Arduino

• Atom DTU NBIoT2 Arduino Library

• Download the library file and manually add it to the Arduino library folder path, or import it directly through the Arduino IDE.

PlatformIO

• Atom DTU NBIoT2 Project Demo for Platform.IO

• Specify the dependency library version in the platformio.ini file.

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

Protocol

• SIM7028 Series_AT Command Manual_V1.00

Video

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