Adafruit
Adafruit RFM95W LoRa Radio Transceiver Breakout - 433 MHz
The Adafruit RFM95W LoRa Radio Transceiver Breakout lets you send data over very long distances using the 433 MHz licence-free ISM band. Based on the SX1276 ...
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The Adafruit RFM95W LoRa Radio Transceiver Breakout lets you send data over very long distances using the 433 MHz licence-free ISM band. Based on the SX1276 LoRa chipset, this breakout achieves ranges of approximately 2 km line of sight with a simple wire antenna — or up to 20 km with directional antennas and optimised settings.
LoRa (Long Range) modulation trades raw data speed for dramatically extended range compared to WiFi or Bluetooth. These packet radios require no pairing or association — simply send data and any matching receiver will pick it up. The module handles packetisation, error correction, and auto-retransmit automatically.
Key Features
- SX1276 LoRa Modulation – Long-range spread-spectrum radio, far exceeding standard FSK modules
- +5 to +20 dBm Transmit Power – Up to 100 mW output, selectable in software
- 433 MHz ISM Band – ITU "Europe" licence-free ISM frequency
- ~2 km Range – Line of sight with simple wire antenna; further with directional antennas
- SPI Interface – Ready-to-go with Arduino libraries
- Built-in Voltage Regulator & Level Shifter – Accepts 3–5 V DC power and logic
- Flexible Antenna Options – Solder a wire antenna or attach a uFL/SMA connector for an external antenna
- Low Power Consumption – ~100 mA peak during +20 dBm transmit, ~30 mA during active listening
Ideal For
- Long-range sensor networks and remote telemetry
- Campus or town-wide data transmission
- IoT projects requiring extended range over high speed
- Agricultural or environmental monitoring stations
Package Contents
- 1× Adafruit RFM95W LoRa Radio Transceiver Breakout – 433 MHz
- 1× Header strip (soldering required)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LoRa
- LoRa is a long-range, low-power wireless radio technology often used for telemetry, remote sensors and other links that send small amounts of data over long distances. It is distinct from Bluetooth and WiFi, so sharing a connector or pinout with LoRa hardware does not mean a device actually uses LoRa.
- SMA
- SMA is a small threaded coaxial (RF) connector widely used to attach antennas and other radio-frequency cables. A device with SMA antenna ports needs antennas or pigtails with matching SMA connectors, or a suitable adapter, to connect to them.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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