ATOM DTU NB is a programmable data transmission unit (DTU) that integrates NB-IoT communication functions. The built-in SIM7020G 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 interface) for users to expand, 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 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:

SIM7020G/Global version/Multi-band support
RS485 communication interface (with 12V input interface, internal integrated DCDC step-down 5V)
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/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 protocol: TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS

Specifications:

Module: SIM7020G
Support Cat-NB frequency band: B1/B2/B3/B4/B5/B8/ B12/B13/B17/B18/B19/ B20/B25/B26/B28/ B66/B70/B71/B85
Network protocol: TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS
Communication: UART 115200bps
Net weight: 32g
Gross weight: 40g
Product Size: 64 x 24 x 29mm
Package Size: 91 x 42 x 24.5mm

Applications: