Industrial LoRa Modem, Point-to-Point Wireless RS232/485/422 to LoRa Converter

Engineered for zero-fee telemetry, this industrial LoRa serial node securely bridges RS232/485/422 data up to 8km. When paired with the VT-LR601 gateway, it enables direct Modbus TCP/RTU conversion and MQTT/JSON cloud integration for off-grid SCADA monitoring.

 
Part No. VT-LR600
sku : IoT-L100
INSTANT QUOTE

⚠️ Important: LoRa adapters must be used in pairs.

• RS485/232/422 to LoRa to RS485/232/422: We recommend VT-LR600 + VT-LR600.

• RS485/232/422 to LoRa to Ethernet: We recommend VT-LR600 + VT-LR601.

Purchase VT-LR601 Gateway Here

Build Zero-Fee Wireless Private Networks

Eliminate recurring cellular costs. Operating on license-free ISM bands, the VT-LR600 securely transmits RS232/485/422 telemetry data over expansive areas without relying on telecom networks.

VT-LR600 Industrial LoRa Serial Node Overview

Unmatched 8km Range & Penetration

Powered by Semtech's LoRa™ modulation (-140dBm sensitivity, 20dBm transmit power), it delivers an 8km line-of-sight range and penetrates up to 5 concrete floors, easily overcoming factory wiring constraints.

LoRa 8km Long Range Wireless Transmission Diagram

Advanced MQTT & Modbus TCP Gateway (VT-LR601)

While the VT-LR600 serves as the serial edge node, the VT-LR601 Ethernet gateway seamlessly converts wireless LoRa payloads into Modbus TCP or JSON formats, pushing data directly to SCADA or public clouds via MQTT.

VT-LR601 LoRa to Ethernet Modbus TCP MQTT Gateway

Hardware Interfaces & Dimensions

Built for industrial panels, it features a compact, anti-interference SECC metal housing (9.4 x 6.5 x 2.5cm) with wall-mount flanges and supports DC 9~24V wide voltage input.

VT-LR600 LoRa Serial Node Hardware Port Definitions
VT-LR600 Physical Mechanical Dimensions

Appearance & Hardware
Data InterfacesRS485/422 (Terminal Block), RS232 (DB9), Ethernet 10M/100M (RJ45, VT-LR601 only)
Power SupplyDC 9~24V (Inside positive, outside negative, standard outlet)
Working CurrentVT-LR600: 30mA@12V | VT-LR601: 160mA@12V
DimensionsL x W x H = 9.4cm × 6.5cm × 2.5cm
Wireless Communication
Transmission DistanceOutdoor unobstructed: 6km~8km | Indoor: Penetrates approx. 5 floors
Frequency Range410MHz ~ 525MHz (115 Wireless Channels)
RF PerformanceReceiving Sensitivity: -140dBm | Transmit Power: 20dBm
Modulation SystemLoRa™ Patented modulation technology
Antenna ConnectionExternal SMA male connector (Default 490MHz working frequency)
Software & Environment
Serial Port SetupBaud Rate: 1200~115200bps; Check Bits: None, Even, Odd
Ethernet Protocols (LR601)ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS, Modbus TCP, MQTT, JSON
EnvironmentOperating: -40℃ ~ 85℃ | Storage: -45℃ ~ 165℃ | Humidity: 5~95% RH
Core Wireless Telemetry Capabilities
✓ 8km Ultra-Long Range Penetration: Utilizing Semtech’s SX1287 chip and patented LoRa™ modulation, it achieves -140dBm sensitivity to push signals up to 8km outdoors, and penetrates up to 5 concrete floors indoors.
✓ Zero-Fee Private Network: Stop paying monthly telecom carrier fees. LoRa operates on free ISM bands (410-525MHz) with 115 selectable channels to bypass 4G/GPRS dead zones and avoid Wi-Fi/Zigbee interference.
Edge Gateway & Software Capabilities
✓ Modbus TCP/RTU Conversion: The VT-LR601 model includes an RJ45 port and an embedded protocol engine that transparently converts wireless RTU payloads to Modbus TCP for instant SCADA integration.
✓ JSON & MQTT Cloud Ready (VT-LR601): Automatically collects data from edge Modbus RTU/645 instruments and publishes structured JSON payloads straight to public clouds using MQTT protocol.
✓ Free Configuration Utility: Includes the Windows-based VirCom device management tool for quick IP configuration, serial parameter adjustment and Virtual COM port mapping.

Frequently Asked Questions

Do I need to pay monthly cellular/SIM card fees to use this modem?
No. Unlike 4G/GPRS DTUs, the VT-LR series operates on license-free ISM frequency bands (410-525MHz). Once you purchase the hardware, you own your private wireless network—there are zero recurring telecom or data plan fees.
What is the exact difference between the VT-LR600 and the VT-LR601?
The VT-LR600 is a serial edge node (RS232/485/422 to LoRa). It is placed at the remote equipment site. The VT-LR601 acts as the central master gateway; it receives the LoRa signal and features an RJ45 Ethernet port to bridge that data into your local TCP/IP network, supporting Modbus TCP and MQTT/JSON parsing.
Will obstacles like concrete walls or metal cabinets block the LoRa signal?
LoRa uses sub-GHz frequencies (default is around 490MHz) and Semtech’s modulation which penetrates far better than 2.4G Wi-Fi or Zigbee. It easily penetrates metal environments and can bridge signals across about 5 concrete floors indoors.
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