Atom DTU LoRaWAN-US915

SKU:A152-US915

Description

Atom DTU LoRaWAN-US915 is a LoRaWAN programmable data transmission unit (DTU) designed for the 915 MHz frequency band, specifically tailored for the US915 band, suitable for the United States and other regions using the US915 band. This module employs the STM32WLE5 solution, supporting long‑range communication with low power consumption and high sensitivity. The module features a built‑in LoRaWAN protocol stack, supporting Class A, Class B and Class C operation modes for easy connection to various LoRaWAN server platforms such as TTN, ChirpStack, Actility, Tencent Cloud, etc.; it also supports LoRa® point‑to‑point (P2P) communication mode and uses a UART communication interface (controlled via the AT command set) for flexible configuration, and integrates an RS485 communication interface to provide reliable wired connectivity for industrial field devices. The product uses a high‑performance rubber‑duck antenna, with an optimized design to deliver more stable signal coverage and longer communication range, suitable for a variety of complex environments. In LoRaWAN mode, the module can act as a node to connect to a gateway for data collection and management; in P2P mode, it can achieve direct device‑to‑device communication without a gateway. Structurally, the module features a standard 35 mm DIN rail slot at its base, allowing direct installation on industrial rails for quick deployment and maintenance in cabinets or distribution boxes. It is widely used in long‑range, low‑power IoT communication scenarios such as smart agriculture, industrial monitoring, and environmental monitoring node deployments.

Features

Complies with LoRaWAN® 1.0.3 protocol
Supports 902 – 928 MHz band
Supports LoRa® P2P (point‑to‑point) communication
LoRaWAN Activation Modes: OTAA, ABP
Serial communication (AT commands)
RS485 communication
High‑sensitivity stick antenna
Low power consumption
LEGO‑compatible mounting holes
DIN rail mounting design
Development Platforms:
- UiFlow1
- UiFlow2
- Arduino IDE

Includes

1 × Atom DTU LoRaWAN‑US915
1 × Stick antenna (@0.5 dBi total length 195 mm, SMA male)
1 × HT3.96‑4P wiring terminal

Applications

Smart agriculture
Industrial monitoring
Environmental monitoring node deployment

Specifications

Specification	Parameter
LoRa Solution	STM32WLE5 @256 KB Flash, 64 KB RAM
Supported Band	US915 (902 – 928 MHz)
Protocol Support	LoRaWAN® 1.0.3 (Class A, Class B, Class C)
Receive Sensitivity	–137 dBm
LoRaWAN Activation Modes	Over‑The‑Air Activation (OTAA), Activation By Personalization (ABP)
Communication Modes	LoRaWAN and LoRa® P2P (point‑to‑point)
RS485	SP3485EN
Interface	UART serial @default baud rate 115200, supports AT commands
Antenna	High‑performance stick antenna, 50 Ω impedance @0.5 dBi, total length 195 mm, SMA male
Standby Power Consumption (RS485 interface power)	DC 9V @ 167.98 µA DC 12V @ 178.09µA
Operating Current (RS485 interface power)	(500 kbps) Data reception: DC 9V @ 50.32mA Data transmission: DC 9V @ 51.56mA (125 kbps) Data reception: DC 9V @ 49.94mA Data transmission: DC 9V @ 102.79mA
Operating Temperature	0 – 40 °C
Product Size	65.3 × 28.7 × 24.0mm
Product Weight	20.0 g
Package Size	175.0 × 40.0 × 30.0mm
Gross Weight	56.9 g

Learn

LoRaWAN Introduction and Device Configuration

For an introduction to LoRaWAN and device configuration information, please refer to TTN – LoRaWAN Docs .

Major Countries and Regions Supporting US915

Applicable Regions

Argentina / Canada / Chile / Colombia / Ecuador / Greece / Guatemala / Jamaica / Mexico / Nicaragua / Panama / United States / Uruguay

Certifications

RAK3172 Module Certification Information

Schematics

Atom DTU LoRaWAN-US915 Schematic PDF

1/1

PinMap

LoRa

Atom DTU LoRaWAN-US915	TX	RX
Atom-Lite / Atom-Matrix	G19	G22
AtomS3 / AtomS3-Lite	G6	G5
AtomS3R / AtomS3R-CAM / AtomS3R-M12	G6	G5

RS485

Atom DTU LoRaWAN-US915	RX	TX
Atom‑Lite / Atom‑Matrix	G33	G23
AtomS3 / AtomS3‑Lite	G8	G7
AtomS3R / AtomS3R‑CAM / AtomS3R‑M12	G8	G7

HY2.0‑4P

HY2.0‑4P	Black	Red	Yellow	White
PORT.A	GND	5V	G25 (Atom Lite)	G21 (Atom Lite)

Model Size

Datasheets

RAK3172

Softwares

Arduino

UiFlow1

coming soon...

UiFlow2

coming soon...

Protocol

Atom DTU LoRaWAN-US915 AT Command Manual

Video

Atom DTU LoRaWAN-US915 product introduction and demonstration

Product Comparison

Product Comparison Table	Atom DTU LoRaWAN‑US915	Atom DTU LoRaWAN915
Chip Module	STM32WLE5	ASR6501
Receive Sensitivity	Minimum –137 dBm	Minimum –137 dBm
Interface Type	UART @default baud rate: 115200	UART @default baud rate: 115200
LoRaWAN Protocol Version	LoRaWAN 1.0.3, supports Class A/B/C	LoRaWAN 1.0.1, supports Class A/C
Transmit Power	Max 22 dBm	Max 21 dBm
Protocol Stack Support	Built‑in LoRaWAN protocol stack	Built‑in LoRaWAN protocol stack
Communication Modes	LoRaWAN and LoRa® P2P (point‑to‑point)	LoRaWAN