M5Stack Atom DTU NBIoT2 Wireless Data Transmission Units
M5Stack Atom DTU NBIoT2 v1.1 Wireless Data Transmission Units (DTUs) are programmable DTUs designed for global Cat-NB frequency bands. These M5Stack DTUs are upgraded from the previous generation, adding an I/O expansion chip to enable control of the communication module power enable and software reset. These features reduce power consumption and ensure the SIM module can be reset without power cycling when abnormal conditions occur. Atom DTU NBIoT2 DTUs include an analog-to-digital converter (ADC) monitoring circuit that supports real-time acquisition of the input power voltage from the HT3.96-4P interface, enabling power status monitoring. These DTUs integrate a SIM7028 communication module and use UART communication (controlled via AT command set).
Features
- Global version/multi-band support, suitable for worldwide use
- SIM7028 module, AT command control
- Micro-SIM Internet of Things (IoT) card
- I/O expansion chip for communication module power enable and software reset control
- ADC monitoring circuit supporting power status monitoring
- External SMA antenna interface
- Reserved RS485, I2C/custom Grove interfaces
- Data rates
- 127kbps (DL)
- 159kbps (UL)
- Supports multiple network protocols, such as MQTT and HTTP
- Multiple power supply methods
Applications
- Asset tracking
- Remote monitoring/control
- Shared bicycles
Specifications
- 850MHz to 1900MHz frequency range
- 9V to 24V supply voltage range
- 64.3mm length x 24mm width x 28.7mm height
- 0°C to +40°C operating temperature
Kit Contents
- One Atom DTU NBIoT2 v1.1
- One 850MHz to 1900MHz SMA rubber antenna
- One 1.5mm L-shape hex key (for M2 screw)
- One 16mm M2 cap head machine screw
- One HT3.96-4P terminal
- One I/O sticker
Pin Map
Dimensions
Schematic
