New Azure Sphere Guardian Device Coming…

Redesigned from our popular Guardian 2 device, Our new modular Guardian3 device is coming: The new device supports more Northbound and southbound connections, We can provide Wi-Fi, Ethernet, and cellular for northbound to connect your device to the Azure Sphere IoT cloud. we support more southbound devices such as Bluetooth sensors, LoRa devices, southbound Ethernet devices, RS485/RS422 devices, CAN devices. Our phone App can help you configure the Guardian.


  • AI-Link WF-M620-RSD2 module
  • Dual-band Wi-Fi, 2.4GHz and 5GHz
  • Bluetooth 5.0 connectivity
  • Ethernet port: RJ45 female, 10Mbps
  • GSM/LTE-M cellular for data communication and GNSS location report (optional)
  • Ulta low power LoRa device connectivity (Model1)
  • USB port for power supply and USB/Serial data communication ( Model1 and Model2)
  • Second southbound Ethernet port (Model2)
  • RS422 or RS485 and CAN (Model3)
  • Support Modbus for TCP/IP and UART.
  • MCU programming and debugging port
  • A/C Adapter power supply, 5V/2A DC
  • 3 LED indicators: 2 Green/Red programmable LEDs, 1 BLE LED indicator
  • Operating temperature: -10 °C to +80 °C
  • Operating humidity: 5% to 90% non-condensing
  • Dimensions: 75mm*75mm*20mm
  • Enclosure: black, with mounting holes

We currently accepting orders for three standard models for customers with different southbound connectivity requirements. All models support Wi-Fi, Ethernet, and optional cellular data for northbound.

Guardian3 M1: Support southbound connection by LoRa, USB-to-Serial; Please check the datasheet here.

Guardian3 M2: Support USB-to-Serial and southbound Ethernet in addition to northbound Ethernet/Cellular. Please check the datasheet here.

Guardian3 M3: Support CAN, RS485 or RS422 and Modbus. Please check the datasheet here.

Guardian 3 Side View
Guardian3 Top View

Changhong Ai-Link joins hands with Deutsche Telekom to jointly lay out the European Internet of Things market

Bonn, Germany, February 13th-Deutsche Telekom, Europe’s largest telecommunications operator, announced that a new group of partners such as Changhong AI-Link has officially joined the IoT Solution Optimizer strategic platform and will continue to work with Deutsche Telekom Deeply cultivate the European Internet of Things market.

IoT Solution Optimizer (“Internet of Things Solution Optimization Platform”) is a strategic platform and ecological cooperation circle built by Deutsche Telekom around the rapid implementation of IoT applications. This ecosystem has gathered a number of technology companies with outstanding advantages in the IoT industry chain, including outstanding manufacturers from the fields of IoT chips, IoT modules, spatial positioning technology, power optimization, and solution integration. The IoT module based on NB-IoT communication technology launched by Changhong AI-Link has obtained Deutsche Telekom’s network approval and global market access. Through the empowerment and collaboration of the IoT Solutions Optimizer platform, it can help customers perform NB -The efficient deployment of IoT applications accelerates the pace of digital transformation.

At the launch of the new partners, Mr. Remy Abidan, senior vice president of Deutsche Telekom’s Internet of Things business, said that the addition of new strategic partners will inevitably inject new vitality into Deutsche Telekom’s Internet of Things strategic platform and enhance service capabilities.

Changhong AI-Link is a provider and manufacturer of products and services in the field of wireless connectivity in the Internet of Things. The company helps global customers to build full-scenario connection capabilities, create system-level solutions, and provide one-stop high-quality services for global customers to actively embrace the Internet of Things and achieve digital transformation, from full-category IoT modules, new IoT devices, and overall hardware and software delivery. Together, the two parties will surely compose a new chapter.

Contact Us

For all general, partnership, career, and/or press inquiries, please contact us through email or phone number:

Email: crl@changhong.us
Phone: 1-408-970-0349
Address: 2580 North First Street, Suite 100, San Jose, CA 95131

Azure Sphere Guardian Device AI-SR620 II

NEW UPDATE: Please check our third generation Guardian products

The Guardian device enables the secure connection of existing equipment to the Microsoft Azure Sphere IoT cloud via Ethernet or dual-band Wi-Fi. It can connect your device via different interfaces: RS485, RS232, I2C, UART, GPIO, and Ethernet. Our Android phone App can help you configure the module’s Wi-Fi or switch between Ethernet or Wi-Fi. The on-board Bluetooth chipset provides wireless senor and device configuration connectivity.


  • AI-Link WF-M620-RSD2 module
  • Dual-band Wi-Fi, 2.4GHz and 5GHz
  • Bluetooth 5.0 connectivity
  • Ethernet port: RJ45 female, 10Mbps
  • RS232 or RS485 port: contact pin with SPDT slide switch
  • I2C or UART port: contact pin with SPDT slide switch
  • Micro USB debug port
  • Micro-USB power source port, 5VDC/2A
  • 3 LED indicators: 1 Green Power LED, 1 Red/Green Network LED and 1 Red/Green App LED
  • Operating temperature: -10 °C to +80 °C
  • Operating humidity: 5% to 90% non-condensing
  • Dimensions: 75mm*75mm*20mm
  • Enclosure Color: white

LoRa Home User Guide Download

Our LoRa Home products won great attention at the 2020 CES show. The following video shows how to add devices to CHiQ app:

To download our CHiQ LoRo Home User manual, please click the following product link: