Wireless long-range PLC radio modem | LoRa transceiver | 433MHz | 8–28VDC | 20dBm | 3 km | RS232/RS485

Technical Specifications:

RF Parameters:

Frequency range: 410~441 MHz (default 433 MHz)
Transmission power: 20dBm (100mW)
Air data rate: 2.4k19.2kbps (default 2.4kbps)
Transmission distance: 3 km (in open space with a 5dBi antenna, 2m height)
Hardware Parameters:

Dimensions: 82 × 62 × 25 mm (without SMA-K connector)
Antenna connector: SMA-K (external threaded connector, 50Ω)
Communication interface: RS232 / RS485 (DB9 socket / 3.81 mm terminal)
Data transmission rate: 1200–115200 bps (default 9600 bps)
Buffer: 512 bytes (automatic splitting into 197-byte packets)
Electrical Parameters:

Power supply voltage: 8–28V DC (default 12V)
Transmission current: 330–403 mA (20dBm)
Standby current: 19–23 mA
Environmental Parameters:

Operating temperature: -40°C ~ +85°C
Operating humidity: 10% ~ 90% RH
Storage temperature: -40°C ~ +125°C
Functions:

Long-range data transmission – LoRa modulation allows data transmission up to 3 km.
High signal stability – integrated TCXO stabilizer ensures accurate frequency maintenance in extreme conditions.
RS232 and RS485 support – compatibility with various industrial devices.
Configurable via AT commands – allows easy setting changes.
Transparent data transmission mode – supports direct data transfer without additional encoding.
Visual indicators: PWR-LED (red) – shows power; TXD-LED (yellow) – data transmission; RXD-LED (yellow) – data reception.
Applications:

Industrial automation – wireless data transmission between PLC controllers, sensors, and SCADA systems.
Smart metering networks – data transmission for electric, water, and gas meters.
Agriculture – wireless monitoring of temperature, humidity, and other indicators.
Logistics and warehouses – wireless data transmission in large facilities.
Remote monitoring systems – oil and gas industry, infrastructure monitoring.
Pros:

Long-range data transmission – up to 3 km.
High reliability and interference resistance – LoRa modulation avoids signal attenuation.
RS232 and RS485 support – easy integration with PLCs and other devices.
Wide voltage range (8–28V DC) – flexible power solution.
Compact design – easy to integrate into existing systems.
Visual indicators – LED lights show operational status.
Cons:

No Wi-Fi or Ethernet – only wireless LoRa connection.
Signal range depends on the environment – walls, trees, or buildings may reduce transmission distance.
Requires an external antenna – to achieve the maximum operational distance.
Powerful long-range wireless LoRa transceiver, designed for industrial and automation applications. It is ideal for data transmission up to 3 km, supports RS232 and RS485, operates in a wide voltage range (8–28V DC), and is easily configurable via AT commands.

A reliable choice for those who need stable and long-range wireless communication without the need for internet or mobile connections.