DFRobot
LoRa Radio Module - 433MHz
A long-range, low-data-rate radio modem pair based on the Semtech SX1276 LoRa transceiver. Operating on the 433 MHz ISM band, these modules deliver robust wi...
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A long-range, low-data-rate radio modem pair based on the Semtech SX1276 LoRa transceiver. Operating on the 433 MHz ISM band, these modules deliver robust wireless links with excellent sensitivity and low power consumption — ideal for remote sensing and IoT applications.
The modules support two operating modes: Standard mode for transparent serial data passthrough, and Star network mode where one module acts as a central node communicating bidirectionally with multiple node modules. Configuration is done via TTL serial commands.
Key Features
- LoRa Spread Spectrum – Long-range communication on the 433 MHz ISM band
- −148 dBm Receive Sensitivity – Excellent range in noisy environments
- ≤20 dBm Output Power – Up to 100 mW transmit power
- Ultra-Low Sleep Current – ≤3.9 µA for battery-powered deployments
- Dual Operating Modes – Transparent serial modem or star network topology
- Serial Wake-Up & Wireless Wake-Up – Flexible power management
- Wide Voltage Range – 2.1–3.6 V (battery) or 4.5–5.5 V
- TTL Serial Interface – 1,200–57,600 bps (default 9,600)
- Operating Temperature – −40°C to +80°C
- Dimensions – 34.2 × 18.4 mm
Ideal For
- Long-range wireless sensor networks
- IoT and remote monitoring projects
- Point-to-point serial data links
- Star network topologies with a central hub
Package Contents
- 2× LoRa Radio Module – 433 MHz
- 2× 433 MHz Antenna (SMA-Male connector)
Jargon buster
Plain-language definitions for the technical terms used above.
- 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.
- LoRa Spread Spectrum
- A radio modulation method used by LoRa that spreads a small amount of data across the radio band, trading data rate for long range and strong tolerance to noise and interference. It lets a device send data reliably over long distances at low power, which suits links such as telemetry, sensor networks or relaying correction data.
- 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.
- TTL serial
- A simple serial data connection that uses microcontroller logic-level voltages (typically 3.3 V or 5 V) rather than the higher, inverted voltages of computer RS-232. When a device lists TTL serial, it can usually wire straight to a microcontroller's UART pins or to a USB-to-TTL serial adapter, but it needs a level converter before connecting to a true RS-232 port.
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