Atom DTU NBIoT-CN
Description
ATOM DTU NB CN is a programmable data transmission unit (DTU) with integrated NB-IoT communication function. The built-in SIM7020C module covers most of the Cat-NB frequency bands and integrates the SMA external antenna interface to improve the communication quality and signal stability of the device. Unlike the DTU, which generally only has the function of data transparent transmission, the ATOM DTU series adopts a more open architecture design. The controller ATOM LITE can modify the program at will according to the actual business, and the whole machine reserves a variety of interfaces (RS485, I2C, custom interfaces) for user expansion, which is convenient for the rapid access of sensors and actuators. The self-contained guide rail clamping structure is perfectly embedded in various industrial control sites. ATOM DTU NB CN is very suitable for various low-latency, low-throughput application scenarios (such as remote control, asset tracking, remote monitoring, remote medical treatment, shared bicycles, etc.).
Features
SIM7020C/Applicable to China
RS485 communication interface (with 12V input interface, internal integrated DCDC step-down 5V)
Modbus Master/slave
Strong signal access capability
AT command control
SIM card type: MicroSIM
External antenna: SMA antenna interface
Grove expansion interface:
- I2C x1
- Custom x1
Serial communication: UART 115200bps
Self-contained rail clamping
Cat-NB frequency band:
- B1/B3/B5/B8
Data transmission (kbps):
- 26.15(DL)/62.5(UL)
Network protocol:
- TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Ira Cloud*
Includes
- 1x ATOM LITE
- 1x ATOM DTU NB CN
- 1x SMA antenna
- 1x SMA red cap
- 1x M2 hexagon wrench
- 1x M2x16 screw
- 1x 3.96-4P terminal
- 1x NB-IoT flow card (mobile NB flow: 300M/year, valid time: 2021.06.16-2024.05.31)
Applications
- Smart meter
- Remote monitoring
- Shared bicycles
Certification
- RoHS/REACH/CCC/CTA/SRRC/Mobile/Unicom/Telecom/ATEX
Operator certification
- China Telecom/China Unicom/China Mobile
Specifications
| Resources | Parameter |
|---|---|
| Module | SIM7020C |
| Support Cat-NB frequency band | B1/B3/B5/B8 |
| Network protocol | TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Aila Cloud* |
| communication | UART 115200bps |
| Net weight | 32g |
| Gross weight | 40g |
| Product Size | 64 * 24 * 29mm |
| Package Size | 91 * 42 * 24.5mm |
Pin mapping
- SIMCOM7020C
| ATOM | G22(TX) | G19(RX) | 5V | GND |
|---|---|---|---|---|
| SIMCOM7020C | RX | TX | VIN | GND |
- RS485
| ATOM | G23 | G33 | 5V | GND |
|---|---|---|---|---|
| RS485 | TX | RX | VIN | GND |
- I2C
| ATOM | G25 | G21 | 5V | GND |
|---|---|---|---|---|
| I2C | SDA | SCL | VIN | GND |
Schematic
Related Link
- Datasheet
- SIM7020 Series datasheet
- SIM7020 Series_Ayla_Application Note_V1.03
- SIM7020 Series_CTBURST_Application Note_V1.01
- SIM7020 Series_CoAP_Application Note_V1.03
- SIM7020 Series_EAT_Environment & Compilation & Burning Guide_V1.02.
- SIM7020 Series_FOTA_Application_Note_V1.02
- SIM7020 Series_HTTP(S)_Application Note_V1.04
- SIM7020 Series_LWM2M_Application Note_V1.03
- SIM7020 Series_Low Power Mode_Application Note_V1.05
- SIM7020 Series_MQTT(S)_Application Note_V1.05
- SIM7020 Series_NVRAM_Application Note_V1.02
- SIM7020 Series_SAT_Application Note_V1.01
- SIM7020 Series_SNTP_Application Note_V1.03
- SIM7020 Series_TCPIP_Application Note_V1.04
- AT Command
Example
Arduino
- Examples
- Libraries
UIFLow
Usage
