LoRa Wireless RS485 transmitter and receiver with LCD screen – 2 Units

These 433 MHz units can connect to the controller via the LoRa radio, without the need for a long cable, and work with solar electrical meters, solar inverters, or any Modbus device.

Works with solar systems like GivEnergy, FOX Solis inverter and others; please see our blog/post on this: Solar inverters with Modbus RTU communication to battery systems

For further information, you can look at the https://LoRas.co.uk website

You can install 1 unit on your controller or solar inverter and connect up to 32 meters to it, as long as each unit has its own Modbus address, different from the others. The LoRaWAN Data Transmission Terminal is a universal communication terminal built around the LoRa RF chip. It integrates two industrial-standard RS485 interfaces and supports multiple protocols, enabling data transmission between wired and wireless devices. It supports the LoRaWAN Class C protocol. It is widely used in IoT, centralised metering, and industrial control, among other areas. LoRa data transmission terminals are universal communication interface equipment. They enable wireless RS485 data transmission, eliminating the need for long cables in complex installations. Includes a pair of communicators (transmitter and receiver), each unit is a transceiver (can be a receiver or transmitter – two-way traffic to each other). Note: If more than one LoRa transmitter/receiver set is used on-site with different baud rates or parity settings, they must operate on different communication channels. IMPORTANT: ALWAYS CONNECT THE ANTENNA BEFORE POWERING UP THE TRANSMITTER OR RECEIVER

Key features:

• Small, easy-to-install
• Operating temperature range: -20 to 70 ^oC
• 1 standard RS485 interface, supporting a variety of protocols and communicating with various automatic devices with RS485 interfaces
• Equipped with LoRa chips SX1276 from Semtech for the RF part
• Supports the LoRaWAN Class C protocol
• Band: 433 MHz
• Wireless ultra-long transmission range with up to 6-8 km barrier-free
• 1.9-meter Antenna lead with magnetic base, antenna 413-453 MHZ
• Display interface: 128×64 lattice OLED, which can query power parameters on site
• Switching function: 1 way 5A relay switch output, L to Y0

Mostly used in metering projects where cabling is expensive or not possible. This module integrates remote Modbus meters and I/O modules without long cable runs.

Communication

• Interface RS485 half-duplex
• Protocols: MODBUS RTU, DL/T 645
• Baud rate: 1200, 2400, 4800 or 9600 bps, 8N1, 8E1 or 8O1
• Packet Length Sent: 255 bytes
• Packet Length Received: 255 bytes

System Modes

• LoRa Radio – Long Range Radio, mainly targeted at M2M and IoT networks. This technology enables public or multi-tenant networks to connect multiple applications on the same network.
• LoRa PMAC – Basic LoRa connection example, sending and receiving data. In LoRa–MAC mode, the LoRaWAN layer is bypassed, and the radio is used directly.
• LoRaWAN – Low-power, wide-area networking protocol built on top of the LoRa radio modulation technique.

Power supply

• 220V/230Vac ±20% 45-65Hz
• Power Consumption <1W

Housing

• Dimensions: 90 mm long x 60 mm deep x 37 mm wide.
• Construction: plastic, self-extinguishing (PC/ABS)
• DIN rail mounting (DIN EN 50022 norm)
• Cooling: internal air circulation

Environments

• Operating temperature: -25°C to 55°C
• Storage temperature: -40°C to 85°C
• Relative humidity: 5 to 95%, no condensation, no frost
• Ingress Protection Rating: IP40 – for indoor installation

Technical Parameters

• Working Frequency Range: 433 MHz
• ISM Band: 433 MHz
• Antenna Impedance: 50 Ohms
• Output Power: 18 dBm, 100 mA
• Sensitivity: -139 dBm
• Sending Packet Length: 255 bytes
• Receiving Packet Length: 255 bytes

Documentation & Downloads

LoRaWa_FUNC_Manual lora-2022-manual OBM_LoRa_223

Software to Download:
USB-RS485 Driver Software to Download
Modbus_Serial_Scan Software to Download