M5Stack ATOM DTU NB-IoT2 Kit Global Version (SIM7028)
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M5Stack ATOM DTU NB-IoT2 Kit Global Version (SIM7028)
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: Nano
- 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
| Specification | Parameter |
|---|---|
| Communication Module | SIM7028 |
| Supported Cat-NB Bands | B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B66/B70/B85 |
| Network Protocols | TCP/UDP/HTTP/TLS*/DTLS*/DNS/NTP/PING/LWM2M/COAP*/MQTT/MQTTS/SSL |
| Carrier Certifications | Deutsche Telekom/Vodafone/Telefonica/China Telecom/China Mobile/China Unicom |
| Communication Method | UART 115200bps |
| Antenna | Stick Antenna @2.5dBi total length 110mm SMA inner needle |
| Power Supply Methods | RS485 Port (HT396 Interface 9-24V) USB 5V |
| Grove Interface Load Capacity | DC5V/0.9A |
| Operating Temperature | 0-40°C |
| Product Dimensions | 65.3*28.7*24mm |
| Package Dimensions | 168*117*19.7mm |
| Product Weight | 24.6g |
| Package Weight | 38.7g |
Effective Date: March 27, 2025
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
