SX1278 LoRa 433MHz Ra-02 Wireless Spread Spectrum Transceiver Module

Ra-02 SX1278 LoRa 433 MHz Wireless Spread-Spectrum Transceiver Module | Semtech LoRa SPI RF Module with Up to 15 km Range for Long-Range Low-Power IoT and Industrial Communication

The Ra-02 (SX1278) is a high-performance long-range LoRa wireless module operating on the 433 MHz frequency — the workhorse module for IoT, smart city, agricultural monitoring, and industrial telemetry applications. Built around the Semtech SX1278 chipset with proven spread-spectrum modulation that delivers exceptional range vs throughput trade-offs unmatched by traditional FSK / OOK RF modules.

Achieves up to 15 km transmission range in open environments — game-changing for distributed sensor networks where wired or cellular options are impractical. SPI interface integrates with any microcontroller stack (Arduino, STM32, ESP32, Raspberry Pi). 1.6 mA standby current enables battery-powered designs with multi-year deployment life. 18 dBm maximum output power delivers reliable data transmission across long distances. Wide 410–525 MHz frequency range supports versatile communication protocols. IPEX antenna connector supports external antenna customisation. Operates from -35°C to +85°C for industrial environments.

Typical Applications

• Smart agriculture — soil moisture sensors, livestock tracking, irrigation control over kilometres of farmland.
• Smart city — parking sensors, street lighting control, waste bin monitoring.
• Industrial telemetry — remote tank levels, vibration sensors, equipment monitoring.
• Environmental monitoring — weather stations, water quality, air quality across distributed sites.
• Asset tracking — long-range location reporting for vehicles, containers, equipment.
• Building automation — distributed temperature / humidity sensors across large facilities.

Ra-02 SX1278 Module Specifications

FAQ — Ra-02 SX1278 LoRa Module

Q: Is 433 MHz the right band for my region?
A: 433 MHz is the EU / Asia ISM band (license-free with duty cycle limits in EU). For US deployments, use the 915 MHz variant (Ra-01 with SX1278 still works at extended range). For 868 MHz EU, use the Ra-01H (SX1276). Check your local ISM band regulations before deploying.

Q: SX1278 (Ra-02) vs SX1276 (Ra-01H) — which to choose?
A: SX1278 covers 410-525 MHz (sub-GHz lower band). SX1276 covers 803-930 MHz (sub-GHz upper band). Pick based on your region's ISM band allocation. The two chipsets are otherwise functionally equivalent for LoRa modulation.

Q: Can I run a LoRaWAN gateway with this module?
A: Single Ra-02 modules are typically used as end devices in LoRaWAN networks. Gateway-grade designs use multi-channel concentrators (SX1301 / SX1302 chipsets) for handling multiple simultaneous transmissions. The Ra-02 fits LoRaWAN end-device firmware stacks.

Q: Bulk pricing for production deployments?
A: Yes — email contact@lys-sz.com with your quantity for tier pricing on Ra-02 modules.

Related products

• Ra-01H SX1276 LoRa 868 MHz Module
• Ra-01SC LLCC68 LoRa 410-525 MHz Module
• BU01 UWB Indoor Positioning Module
• AT-09 Bluetooth 4.0 BLE Module

System integrators stocking Ra-02 by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.