M5Stack ATOM DTU NB-IoT Data Transmission Kit SIM7020G RS485 K059

Description

Atom DTU NBIoT is a programmable data transmission unit (DTU) integrated with NB-IoT communication functionality. It features a built-in SIM7020G module, covering most Cat-NB frequency bands, and includes an SMA external antenna interface to enhance communication quality and signal stability. Unlike conventional DTUs that only support data passthrough, the Atom DTU NBIoT series adopts a more open architecture design. The Atom-Lite controller allows users to modify the program according to actual business needs. The device is equipped with multiple 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 easy to embed into various industrial control environments. Atom DTU NBIoT is ideal for applications requiring low latency and low throughput, such as remote control, asset tracking, remote monitoring, telemedicine, and shared bikes.

Features

• SIM7020G/Global version/Multi-band support
• RS485 communication interface (with 12V input, internally integrated DC-DC step-down to 5V)
• Modbus Master/Slave
• Strong signal reception capability
• AT command control
• SIM card type: MicroSIM
• External antenna: SMA antenna interface
• Grove expansion interfaces:
  • I2C x1
  • Custom x1
• Serial communication: UART 115200bps
• Built-in rail mounting
• Cat-NB frequency bands:
  • 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 protocols:
  • TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS

Includes

• 1 x Atom-Lite
• 1 x Atomic DTU NBIoT Base
• 1 x SMA antenna
• 1 x SMA red cap
• 1 x M2 hex wrench
• 1 x M2x16 screw
• 1 x HT3.96-4P terminal

Applications

• Smart metering
• Remote monitoring
• Shared bikes

Specifications