USR-M300 Remote I/O Edge Gateway with LTE, Ethernet, and Modbus Support

The USR-M300 Remote I/O Edge Gateway is a high-performance, scalable industrial IoT gateway designed for modern IIoT applications. It integrates edge data collection, computation, active reporting, linkage control, and I/O management into a single robust device. Ideal for industrial automation, smart manufacturing, energy management, and remote monitoring, the USR-M300 ensures reliable, real-time data acquisition and transmission in harsh environments.

With a combination of serial ports, digital and analog I/O, Ethernet, and cellular connectivity, this gateway provides versatile interfacing options for connecting sensors, machines, and network systems. It also supports Modbus RTU/TCP protocol conversion, enabling seamless integration with existing industrial devices and supervisory control systems.

Key Features

• High-Performance Edge Computing: Handles data collection, calculation, and real-time reporting at the edge.
• Multiple I/O Interfaces: Supports 2 serial ports, 2 digital inputs, 2 relays (DO), and 2 analog inputs (4-20 mA).
• Serial Port Flexibility:
  Port 1: RS232/RS485
  Port 2: RS485
  Baud rates: 600-230,400 bps (user-defined)
  Data bits: 7 or 8, Stop bits: 1 or 2, Parity: None, Even, Odd
• Industrial-Grade Protection: EMC compliance with ESD, surge, and EFT protection (IEC61000-4-2/4-4/4-5 Level 3).
• Networking Options:
  Ethernet: 1 WAN/LAN + 1 LAN port (10/100 Mbps, auto MDI/MDIX)
  Cellular LTE Cat4, global frequencies: TDD-LTE, FDD-LTE, WCDMA, GSM/EDGE
• SIM and Antenna: 1 Micro SIM slot, 1 SMA-Female antenna interface
• Cloud & Protocol Support: ICMP, IPv4, IP, ARP, TCP, UDP, DHCP, DNS, HTTP, MQTT, SNMP
• Linkage Control: Data points from DI/AI can trigger DO actions
• VPN & Security: Supports PPTP, L2TP, OpenVPN, and static IP routing
• Modbus Gateway Functionality: Converts Modbus RTU to Modbus TCP and vice versa
• Operating Range: -40 C to +75 C, 10-90% non-condensing humidity
• Mounting Options: DIN rail or wall mounting
• Indicators: POW, WORK, NET, DATA, DO, and DI status LEDs for monitoring

Specifications

Power Supply

• Input Voltage: DC 9-36V
• Current: User-defined, optimized for low power consumption

Serial Ports

• Port 1: RS232/RS485, Port 2: RS485
• Baud Rate: 600-230,400 bps
• Data Bits: 7, 8
• Stop Bits: 1, 2
• Parity: None, Even, Odd

Digital I/O

• DI: 2 channels, 0-2 V = logic low, 9-36 V = logic high
• DO: 2 relays
  DC contacts: 10A @ 28V DC
  AC contacts: 10A @ 277V AC (NO), 5A @ 250V AC (NC)

Analog Inputs

• AI: 2 channels, 4-20 mA

Network

• Ethernet: 1 WAN/LAN + 1 LAN, 10/100 Mbps, auto MDI/MDIX
• Cellular Frequency Bands:
  TDD-LTE: B34/38/39/40/41
  FDD-LTE: B1/2/3/4/5/7/8/12/13/18/19/20/25/26/28/66
  WCDMA: B1/2/4/5/6/8/19
  GSM/EDGE: B2/3/5/8

SIM & Antenna

• 1 Micro SIM slot
• 1 SMA-Female antenna

Software & Protocols

• Network Protocols: ICMP, IPv4, IP, ARP, TCP, UDP, DHCP, DNS, HTTP, MQTT, SNMP
• Modbus RTU/TCP gateway
• Linkage control between DI/AI DO
• VPN: PPTP, L2TP, OpenVPN
• Static IP routing
• NTP support

Physical & Environmental

• Dimensions: 79.6 × 58 × 110 mm
• Housing: ABS, IP30
• Mounting: DIN rail, wall mount
• Operating Temp: -40 C to +75 C
• Storage Temp: -45 C to +85 C
• Operating Humidity: 10-90% non-condensing

Indicators

• POW: Power
• WORK: Operation status
• NET: Network status
• DATA: Serial communication activity
• DO: Relay activation
• DI: Input signal detection

The USR-M300 is ideal for applications requiring reliable edge data processing, flexible I/O integration, remote monitoring, and IIoT connectivity, providing industrial-grade robustness and extensive network compatibility for global deployment.

What's in the box
1 x USR-M300 Remote I/O Edge Gateway with LTE, Ethernet, and Modbus Support