Description

The Unit LoRaWAN-US915 is a LoRaWAN communication module designed for long-distance, low-power IoT deployments on the US915 band. Built around the STM32WLE5 LoRa solution, the Unit LoRaWAN-US915 integrates a LoRaWAN protocol stack and supports Class A, Class B, and Class C operation for different downlink and power-consumption requirements.

With UART AT-command control, OTAA and ABP activation, LoRa point-to-point communication, and a high-sensitivity 2.3dBi rubber duck antenna, the Unit LoRaWAN-US915 can work as a gateway collection node or support direct device-to-device communication when a gateway is not required. The Unit LoRaWAN-US915 is suited for smart agriculture, industrial monitoring, environmental monitoring nodes, and long-range sensor networks in the United States and other compatible regions.

Notice: The US915 version is designed for the United States and other regions using the 902-928 MHz US915 band. Confirm local LoRaWAN frequency regulations, channel plan, and gateway support before deployment.

Features

• Unit LoRaWAN-US915 communication module based on the STM32WLE5 LoRa solution.
• Compliant with LoRaWAN 1.0.3 protocol and supports Class A, Class B, and Class C operation.
• Supports the US915 frequency band from 902-928 MHz for compatible regional deployments.
• Supports LoRa P2P point-to-point communication as well as LoRaWAN network communication.
• OTAA and ABP activation modes for flexible network joining.
• UART serial interface with default 115200 baud rate and AT-command control.
• High-sensitivity rubber duck antenna with 50-ohm impedance, 2.3dBi gain, 195mm total length, and SMA male connector.
• Low-power design, LEGO-hole compatible housing, and development support for UiFlow1, UiFlow2, and Arduino IDE.

Specifications

Applications

• Smart agriculture nodes that need long-range sensor reporting through the Unit LoRaWAN-US915.
• Industrial monitoring deployments where low-power US915 LoRaWAN communication is required.
• Environmental monitoring node deployment with gateway-based collection or P2P data exchange.
• Remote metering, data acquisition, and field sensor projects using UART AT-command control.

Product List

Other Content

The Unit LoRaWAN-US915 uses PORT.C for UART communication: black is GND, red is 5V, yellow is UART_RX, and white is UART_TX. The UART interface and AT-command manual are useful for host-controller integration, automated provisioning, and application firmware development.

LoRaWAN Class A provides the lowest downlink real-time performance and the lowest power consumption for periodic upload nodes. Class B provides medium downlink timing and medium power consumption for scheduled control devices. Class C provides the highest downlink real-time performance and the highest power consumption for real-time control, including industrial automation.

Compared with the older LoRaWAN 915MHz unit, the Unit LoRaWAN-US915 uses STM32WLE5, supports LoRaWAN 1.0.3 with Class A/B/C, provides up to 22 dBm transmit power, and supports both LoRaWAN and P2P communication modes.

Resources

• Unit LoRaWAN-US915 product documentation
• RAK3172 module certification information
• Unit LoRaWAN-US915 schematic PDF
• Unit LoRaWAN-US915 schematic image
• Unit LoRaWAN-US915 model size drawing
• Unit LoRaWAN-US915 datasheet PDF
• Unit LoRaWAN-US915 Arduino library on GitHub
• Unit LoRaWAN-US915 AT command manual PDF
• Unit LoRaWAN-US915 product introduction video file
• UiFlow 1 web IDE for M5Stack development
• UiFlow 2 web IDE for M5Stack development
• Arduino IDE setup documentation for M5Stack
• M5Burner guide for M5Stack tools
• OpenELAB LoRaWAN units features and selection guide

FAQ

Where is the Unit LoRaWAN-US915 intended to be used?

The Unit LoRaWAN-US915 is intended for the United States and other regions using the 902-928 MHz US915 band. Check local frequency regulations, channel plan, and gateway compatibility before deployment.

Can the module work without a LoRaWAN gateway?

Yes. In addition to LoRaWAN network communication, the module supports LoRa P2P point-to-point communication for direct device-to-device scenarios.

How is the Unit LoRaWAN-US915 controlled by a host device?

The module uses a UART serial interface with AT-command control, which makes it practical for M5Stack controllers and other host systems that can communicate over UART.

What is included in the package?

The package includes the Unit LoRaWAN-US915 module, a 20cm HY2.0-4P Grove cable, and a 2.3dBi rubber duck antenna with SMA male connector.