M5Stack NB-IoT 2 Unit Golbal Version with Antenna

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Product Link

M5Stack NB-IoT 2 Unit Golbal Version with Antennahttps://x.com/openelabio

Description

Unit NB-IoT2 is a wireless communication module suitable for global Cat-NB frequency bands. It features an integrated SIM7028 communication module, utilizing serial communication (controlled via AT commands) and incorporating an SMA external antenna interface to significantly enhance device communication quality and signal stability. The SIM7028 module supports multi-band NB-IoT network connections, ensuring broad applicability worldwide. Designed specifically for low-latency and low-throughput applications, the SIM7028 module boasts excellent power management capabilities, making it ideal for long-term operation. It is well-suited for IoT applications such as smart metering, remote control, asset tracking, remote monitoring, telemedicine, and bike-sharing.

Features

• Global version / Multi-band support

• Strong signal reception capability

• AT command control

• SIM card type: Nano

• External antenna: SMA interface

• Serial communication: UART 115200bps

• Cat-NB frequency bands: B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B66/B70/B85

• Data transmission (kbps): 127 (DL) / 159 (UL)

• Network protocols: TCP/UDP/HTTP/TLS*/DTLS*/DNS/NTP/PING/LWM2M/COAP*/MQTT/MQTTS/SSL

• Certification:

  • SRRC */NAL*/CCC*

  • CE-RED */GCF*

  • Deutsche Telekom*/Vodafone*/Telefonica*

  • ROHS */REACH*

  • China Telecom *

  • China Mobile *

  • China Unicom *

Applications

• Remote control

• Asset tracking

• Remote monitoring

• Bike sharing

Specifications

Resources	Parameters
Communication Module:	SIM7028
Supports 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
Certifications	Deutsche supporting/Vodafone/Telefonica/China telecom, China mobile/unicom
Communication Method	UART 115200bps
Power Dissipation	Standby current: DC5V/3.1mA Standing current: DC5V/36mA
Product Size	71.5*24*8mm
Package Size	136*92*13mm
Product Weight	12.4g
Package Weight	25.5g

Datasheets

Datasheet

• SIM7028 Series_Network Searching_Application Note_V1.00

• SIM7028 Series_Low Power Mode_Application Note_V1.01

• SIM7028 Series_TCPIP_Application Note_V1.04

• SIM7028 Series_SSL_Application Note_V1.00

• SIM7028 Series_MQTT(S)_Application Note_V1.03

• SIM7028 Series_LwM2M_Application Note_V1.02

• SIM7028 Series_HTTP(S)_Application Note_V1.04

• SIM7028 Series_COAP_Application Note_V1.00

• NB-EVB_User_Guide_Manual_V1.00

• RSU062-EE-EUT Photo-SIM7028

• RSU062-E6-CE EMC Test Report

• RSU062-E5-3GPP (LTE Band 5) Test Report

AT Command

• SIM7028 Series_AT Command Manual_V1.00

Schematics

PinMap

Core	TXD	RXD	VCC	GND
Core(Basic)	G17	G16	5V	GND
Core2	G14	G13	5V	GND
CoreS3	G17	G18	5V	GND
CoreMP135	PF11	PH8	5V	GND

Model Size

Version Comparison

Product	SKU	Module	Cat-NB Bands	Data Transfer Rate	Communication Protocols
Unit NB-IoT	U111	SIM7020G	B1/B2/B3/B4/B5/B8/B12/ B13/B17/B18/B19/B20/B25/B26 /B28/B66/B70/B71/B85	126 (DL) / 150 (UL)	TCP/UDP/HTTP/HTTPS/TLS*/ DTLS*/DNS/NTP/PING/LWM2M/ COAP*/MQTT/MQTTS/SSL
Unit NB-IoT2	U111-B	SIM7028	B1/B2/B3/B4/B5/B8/B12/ B13/B14/B17/B18/B19/B20/B25/ B26/B28/B66/B70/B85	127 (DL) / 159 (UL)	TCP/UDP/HTTP/HTTPS/TLS*/ DTLS*/DNS/NTP/PING/LWM2M/ COAP*/MQTT/MQTTS/SSL

DifferencesThe main differences between SIM7028 and SIM7020G are frequency band support and data transfer rates. The SIM7028 supports more frequency bands and slightly higher data rates, making it suitable for more markets and applications with higher bandwidth requirements. Although SIM7020G has slightly less frequency band support, it also covers most of the market and is suitable for general iot applications. The two are similar in network protocols and functional features, as well as extensive international and carrier certifications.

Compatible