USR-LG206-H-P LoRa Modem Serial RS232 RS485 to LoRa Converter
USR-LG206-H-P LoRa Modem Serial RS232 RS485 to LoRa Converter
USR-LG206-H-P LoRa Modem Serial RS232 RS485 to LoRa Converter
The USR-LG206-H-P is a professional-grade LoRa modem that converts serial communication protocols (RS232 and RS485) into long-range LoRa wireless transmission, enabling IoT connectivity over distances up to 10 kilometers in open terrain. Industrial automation engineers, IoT system integrators, and remote monitoring specialists use this device to bridge legacy serial equipment with modern LoRa networks without requiring firmware modifications or protocol translation middleware. This converter solves the critical challenge of extending communication range for existing serial-based systems while maintaining backward compatibility and reducing deployment complexity in remote monitoring, smart metering, and environmental sensing applications.
Product Overview
The USR-LG206-H-P LoRa modem operates as a transparent serial-to-wireless gateway, accepting standard RS232 or RS485 serial data streams and modulating them onto LoRa radio frequencies (typically 433MHz, 470MHz, or 868MHz depending on regional variants). The device implements point-to-point or point-to-multipoint communication topologies, making it ideal for applications requiring reliable long-distance data transmission without the infrastructure costs of cellular networks. The modem features automatic baud rate detection, error correction through Forward Error Correction (FEC), and low power consumption design suitable for battery-powered remote installations.
What distinguishes the USR-LG206-H-P is its dual serial interface support allowing simultaneous RS232 and RS485 operation, industrial-grade construction with wide operating temperature range (-40°C to +85°C), and integrated antenna connectors for external high-gain antennas. The device supports transparent transmission mode where serial data passes through unchanged, eliminating the need for complex protocol conversion logic. Built-in status LEDs provide real-time diagnostic feedback, while the compact DIN-rail mountable enclosure integrates seamlessly into industrial control cabinets. Configuration is straightforward through AT commands via serial terminal, requiring no specialized software tools.
Key Specifications
| Specification | Details |
| Product Type | LoRa Serial Modem Converter |
| Brand | USR (United Sure Rise) |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Serial Interfaces | RS232 and RS485 (dual support) |
| Communication Range | Up to 10km in open terrain, 2-3km urban |
| Frequency Band | 433MHz, 470MHz, or 868MHz (regional variants) |
| Baud Rate | 300 to 115200 bps (auto-detection supported) |
| Power Supply | 9-30V DC (wide input range for industrial use) |
| Operating Temperature | -40°C to +85°C (industrial grade) |
Key Features
- Dual Serial Interface: Simultaneous RS232 and RS485 support eliminates the need for separate converters, reducing component count and installation complexity in multi-protocol industrial environments
- Transparent Transmission Mode: Serial data passes through unchanged without protocol conversion, maintaining compatibility with legacy equipment and simplifying system integration
- Extended Communication Range: LoRa modulation achieves 10km line-of-sight transmission, enabling remote monitoring stations without cellular infrastructure or expensive repeater networks
- Industrial Temperature Range: Operating from -40°C to +85°C ensures reliable performance in harsh outdoor deployments, temperature-controlled cabinets, and extreme climate zones
- Wide Power Input: 9-30V DC supply accommodates various industrial power sources including solar panels, UPS systems, and battery banks without additional regulators
- AT Command Configuration: Simple serial terminal interface for parameter adjustment without proprietary software, enabling field technicians to modify settings quickly
- Automatic Baud Rate Detection: Device automatically detects incoming serial speed from 300 to 115200 bps, eliminating manual configuration errors in diverse legacy systems
- DIN-Rail Mounting: Compact form factor designed for standard 35mm DIN rails, integrating directly into industrial control panels and switchboards
Applications and Use Cases
- Smart Water Metering Networks: Connect remote water meter sensors via LoRa to central billing systems, eliminating manual meter reading and enabling real-time consumption monitoring across distributed utility networks
- Industrial Equipment Monitoring: Bridge legacy PLC and SCADA systems with LoRa networks for predictive maintenance, transmitting vibration, temperature, and pressure data from distant production facilities to central control rooms
- Environmental Data Collection: Deploy weather stations, soil moisture sensors, and air quality monitors across agricultural fields or environmental research sites, transmitting data wirelessly to cloud platforms for analysis
- Remote Gate and Access Control: Connect RS485-based access control panels at remote gates or checkpoints to central security systems using LoRa, enabling real-time alarm notifications without cellular connectivity
- Oil and Gas Pipeline Monitoring: Transmit pressure, flow rate, and temperature data from remote pipeline segments to operations centers, detecting leaks and anomalies across vast geographical areas
- Solar Farm Management: Monitor inverter performance, panel efficiency, and battery storage levels across distributed solar installations, aggregating data for predictive maintenance and grid optimization
How to Use
Installation begins by connecting your serial device (PLC, sensor logger, or industrial equipment) to the RS232 or RS485 port on the USR-LG206-H-P using standard serial cables. Supply 9-30V DC power to the device through the power connector, and attach an external LoRa antenna to the SMA connector for optimal range. Access the modem's configuration interface using any serial terminal software (PuTTY, Hyperterminal, or Arduino IDE) at the default baud rate, typically 9600 bps. Issue AT commands to configure parameters such as LoRa frequency, transmit power, spreading factor, and bandwidth according to your regional regulations and range requirements.
For point-to-point communication, configure one modem as a transmitter and another as a receiver with matching frequency and spreading factor settings. For multi-point networks, set all modems to the same channel parameters and enable address filtering if your application requires selective message routing. Test the link by transmitting serial data from your connected device and monitoring reception at the remote end using a serial terminal. The device's status LEDs indicate transmission activity and signal strength, providing immediate feedback during commissioning. Once configured and tested, the modem operates transparently, requiring no further intervention unless you need to modify parameters via AT commands during maintenance windows.
Frequently Asked Questions
What is the maximum transmission distance of the USR-LG206-H-P?
The USR-LG206-H-P achieves approximately 10 kilometers in open, line-of-sight terrain with optimal antenna placement and low spreading factors. In urban environments with buildings and obstacles, effective range reduces to 2-3 kilometers. Range varies based on spreading factor (SF7 offers maximum speed but shorter range, SF12 offers maximum range but slower data rate), antenna gain, transmit power settings, and environmental interference. Testing in your specific deployment location is recommended for accurate range planning.
Can I use both RS232 and RS485 interfaces simultaneously?
Yes, the USR-LG206-H-P supports simultaneous operation of both RS232 and RS485 interfaces. Data received on either serial port is transmitted via LoRa, and LoRa data received is output to both serial ports simultaneously. This feature enables multi-protocol industrial environments where different equipment uses different serial standards. Configure each interface independently via AT commands to set appropriate baud rates, parity, and stop bits for connected devices.
What spreading factor should I use for my application?
Spreading factor selection depends on your range and data rate requirements. SF7 provides maximum data rate (approximately 5.5 kbps) with minimum range, suitable for short-distance high-speed applications. SF12 provides maximum range (10km) with minimum data rate (approximately 250 bps), ideal for long-distance, low-bandwidth monitoring. Intermediate spreading factors (SF8-SF11) offer balanced range and speed. Start with SF9 or SF10 for most industrial applications, then adjust based on link testing and performance requirements.
Does the modem support encryption?
The USR-LG206-H-P operates in transparent mode, passing serial data unchanged without built-in encryption at the modem level. For secure applications, implement encryption at the application layer using your serial device's native encryption capabilities or add encryption middleware in your data processing system. This approach provides flexibility to use industry-standard encryption protocols (AES-256, etc.) appropriate for your security requirements.
What power consumption should I expect for battery-powered deployments?
The USR-LG206-H-P draws approximately 80-120mA during transmission and 30-50mA during reception, with sleep mode consuming less than 5mA. For battery-powered remote stations transmitting data every 10 minutes, a 2000mAh lithium battery provides approximately 30-40 days of operation. Calculate your specific consumption based on transmission frequency, spreading factor, and transmit power settings. Solar panels with small capacity (5-10W) can sustain continuous operation in most climates.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
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- Returns: 7-day return policy on manufacturing defects only
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