Unit NB-IoT2(SIM7028)
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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 *
Includes
- 1x Unit NB-IoT2
- 1x SMA Antenna
- 1x HEX KEY
- 1x Grove Cable
Applications
- Remote control
- Asset tracking
- Remote monitoring
- Bike sharing
Certification
Wireless and Communication Equipment Certifications
- SRRC, NAL, CE-RED, GCF, CCC
Safety and Environmental Certifications
- CCC, RoHS, REACH
Carrier Certifications
- Deutsche Telekom, Vodafone, Telefonica, China Telecom, China Mobile, China Unicom
Specification
| 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 |
Related Link
Datasheet
- SIM7028_Specification
- SIM7028 Series_Network Searching_Application Note_V1.00
- SIM7028 Series_Low Power Mode_Application Note_V1.01
- SIM7028_NCC_Certificate_20230421
- 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_FOTA_Application Note_V1.00
- 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
Schematic
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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 |
Module Size
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Examples
Arduino
Programming attention
PIO user: Download the specified library dependency version: v0.12.0-patch-1
Arduino: Download the above library file and manually install it in the specified Arduino library folder.
Arduino: Download the above library file and manually install it in the specified Arduino library folder.
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 |
Differences
The 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.