USR DR15X Series DTU User Manual

Q: What are the working modes supported by USR-DR15X?

The device supports Network Transparent Transmission Mode, HTTPD Mode, and SMS Transparent Transmission Mode.

Q: How can I configure the USR-DR15X without a computer?

You can use the WeChat Mini Program by scanning the QR code on the product to connect via Bluetooth and adjust parameters.

This manual covers the USR-DR15X series of ultra-small rail-mount DTUs, detailing hardware interfaces, working modes (transparent transmission, HTTPD, SMS)…

USR DR15X Series DTU User Manual - cover page

Brand: Usr
Category: Other Electronics
Document type: User Manual
Language: Chinese
Pages: 59
File format: PDF
File size: 3.5 MB
Published: 17 October, 2026
Updated: 17 October, 2026
MD5 checksum: B5FBCFD99634E82160375E1A497FFAFC
PDF: USR DR15X Series DTU User Manual PDF

About this manual

The USR-DR15X is a compact Cat-1 DTU designed for industrial IoT applications. It supports dual SIM cards with single standby functionality, offering flexible connectivity via RS232, RS485, or TTL interfaces. The device features a rail-mount design for easy installation and supports wide voltage input (5V~16V). This manual is written in Chinese.

What's inside

Product Overview
Hardware Interfaces
Working Modes
AT Command Configuration
WeChat Mini Program Setup
Firmware Upgrade
LED Status Indicators

Specifications

Network Technology	LTE Cat-1 (TDD/FDD)
Data Rate (FDD-LTE)	Downlink 10 Mbps, Uplink 5 Mbps
Power Supply Range	5V~16V (Recommended 12V/1A)
Operating Temperature	-25℃~ +75℃
Dimensions	26×24×75 mm
Weight	<50g

Frequently asked questions

What are the working modes supported by USR-DR15X?