BMT LoRa RA-01 SX1278 433MHz Long Range Wireless Module

The BMT LoRa RA-01 SX1278 433MHz Module is a compact long-range wireless communication module based on the SX1278 LoRa transceiver. It is designed for applications requiring long-distance, low-power wireless data communication and is suitable for smart-home systems, IoT devices, remote monitoring, telemetry, automation and DIY electronics projects.

The module uses spread-spectrum modulation technology to provide high receiver sensitivity and improved resistance to interference compared with conventional short-range wireless communication methods. The SX1278 platform is designed to combine long communication distances with relatively low power consumption, making it suitable for battery-powered and remote applications.

The module operates across the 410-525MHz spectrum range, with 433MHz as the typical operating frequency for this version. It operates from a low-voltage 2.5-3.7V DC supply, with 3.3V recommended.

The supplied product information references a communication distance of up to 10km under suitable conditions. Actual range depends on antenna selection, installation, transmit settings, environmental conditions, interference, line of sight and the data configuration used.

Features

• SX1278 LoRa wireless transceiver module.
• Designed for 433MHz long-range wireless communication.
• Spread-spectrum communication technology.
• High receiver sensitivity.
• Receiver sensitivity specified as up to approximately -148dBm for the SX1278 platform.
• Transmit power specified up to approximately +18dBm.
• Operating spectrum range of 410-525MHz.
• Typical operating frequency of 433MHz.
• Low-voltage operation.
• Supply voltage range of 2.5-3.7V DC.
• Recommended supply voltage of 3.3V.
• Designed for long-distance wireless data transmission.
• Suitable for low-power wireless applications.
• High resistance to interference compared with conventional short-range systems.
• Suitable for IoT and smart-home applications.
• Suitable for remote monitoring and telemetry.
• Compact design for embedded electronics projects.

Specifications

• Product Code: BMT LORA RA-01 SX1278 (433MHZ)
• Module Type: LoRa Wireless Module
• RF Chip: SX1278
• Typical Frequency: 433MHz
• Spectrum Range: 410-525MHz
• Supply Voltage: 2.5-3.7V DC
• Typical Supply Voltage: 3.3V DC
• Transmit Current at 433MHz: Approximately 93mA
• Receive Current at 433MHz: Approximately 12.15mA
• Standby Current: Approximately 1.6mA
• Maximum Stated Transmit Power: Up to +18dBm
• Stated Sensitivity: Up to approximately -148dBm
• Operating Temperature: -30 C to +85 C
• Storage Temperature: -40 C to +90 C
• Storage Humidity: Less than 90% RH
• Referenced Communication Range: Up to 10km under suitable conditions

Long-Range LoRa Communication

LoRa technology is designed for wireless communication over considerably longer distances than many conventional short-range radio technologies. It uses spread-spectrum modulation to provide high sensitivity and robust communication characteristics.

The BMT RA-01 module is therefore suitable for applications where a wireless connection needs to cover a larger area while maintaining relatively low power consumption.

The stated 10km range is a reference value under suitable conditions and should not be considered a guaranteed operating distance. Real-world range can be affected by terrain, buildings, antenna performance, RF interference, mounting height and other environmental factors.

High Receiver Sensitivity

The SX1278 platform is designed for high receiver sensitivity, with the supplied information specifying sensitivity of up to approximately -148dBm.

High receiver sensitivity allows the receiver to detect weaker signals and can contribute to extended communication distances when combined with an appropriate antenna, transmission configuration and clear RF path.

Low-Voltage Operation

The module operates from 2.5-3.7V DC, with 3.3V specified as the typical supply voltage.

This low-voltage operating range makes the module suitable for integration with many low-voltage microcontrollers and embedded systems.

A stable, appropriately regulated supply should be used. The module should not be connected to a supply voltage outside the specified operating range.

Power Consumption

The supplied specifications indicate the following typical current figures at 433MHz:

• Transmit current: Approximately 93mA
• Receive current: Approximately 12.15mA
• Standby current: Approximately 1.6mA

Actual current consumption can vary according to operating mode, transmit power, configuration and other system conditions.

Applications

The BMT LoRa RA-01 SX1278 module is suitable for a wide range of wireless electronics projects, including:

• IoT systems
• Smart-home projects
• Wireless sensor networks
• Remote monitoring
• Industrial monitoring
• Wireless telemetry
• Environmental monitoring
• Agricultural monitoring
• Remote-control systems
• Automation projects
• Energy monitoring
• Long-range sensor applications
• Arduino-compatible projects
• Microcontroller development
• DIY wireless communication
• Embedded electronics
• Remote data collection

DIY and Development Projects

The RA-01 provides a convenient RF platform for developers building custom wireless communication systems. A compatible host controller can be used to process sensor data, control equipment or exchange information with another compatible LoRa device.

It is suitable for experimentation with:

• Long-range sensor nodes
• Remote data acquisition
• Wireless control
• Environmental sensors
• Smart-home nodes
• Telemetry systems
• Low-power IoT devices
• Point-to-point wireless links

Temperature and Environmental Ratings

The module is specified for an operating temperature range of:

• Operating: -30 C to +85 C
• Storage: -40 C to +90 C
• Storage Humidity: Less than 90% RH

These ratings make the module suitable for a variety of indoor and appropriately protected outdoor development applications.

Important Installation Notes

• Use a regulated supply between 2.5V and 3.7V DC.
• 3.3V is the recommended typical supply voltage.
• Use an appropriate antenna for the module's operating frequency.
• Do not operate the transmitter without a suitable antenna or RF load where the module design requires one.
• Keep RF connections short and properly configured.
• Actual communication range depends heavily on antenna performance and environmental conditions.
• The advertised 10km range should be regarded as an ideal or suitable-condition reference rather than a guaranteed distance.
• Ensure the module is configured and operated in accordance with applicable local radio regulations.

Note: Antenna, microcontroller, power supply, cables and other development accessories are not specified as included and may need to be purchased separately.

What's in the box
1 x BMT LoRa RA-01 SX1278 433MHz Long Range Wireless Module