Mecter SL presents the LoRa communication modules from its represented company AI Thinker, models Ra 01S and Ra 01SH, designed for long-range wireless links requiring low power consumption and high interference immunity. LoRa technology (an acronym for Long Range) is specifically designed to transmit small amounts of data over long distances, consuming very little power and at a relatively low cost.

It operates in unlicensed sub-GHz bands using Chirp Spread Spectrum (CSS) modulation, which allows for robustness and greater range at the cost of lower transmission speeds. LoRa has become a common Internet of Things (IoT) solution for sensor networks, telemetry, building automation, irrigation control, smart cities, remote control, and other applications where energy autonomy and link reliability are paramount. The Ra 01S module incorporates Semtech's advanced SX1268 transceiver and operates in the 410 to 525 MHz range, while the Ra 01SH module incorporates the SX1262 transceiver and operates in the 803 to 930 MHz band, including the most commonly used frequencies in Europe (868 MHz) and the Americas (915 MHz). Both modules offer an output power of up to +22 dBm and a high sensitivity of approximately -140 dBm, allowing them to cover considerable distances with a low level of error.

Other common features:

• Modulations: In addition to LoRa™ (CSS), they support FSK, GFSK, MSK, GMSK and OOK.

• Interface: They use an SPI interface.

• Power supply: They operate with voltages of 2.7 V to 3.6 V (typically 3.3 V).

• Maximum Consumption: 140 mA.

• Minimum Consumption: 4.5 mA receiving current (4.2 mA for the Ra-01SH) and 1.6 mA standby current.

• Operating Temperature: From -40 ºC to +85 ºC.

• Certifications: CE and FCC.

Integration and Design:
All modules are offered in a compact SMD16 package (17 × 16 × 3.2 mm), facilitating integration into equipment where space is a critical factor. They feature antenna connection via soldering to a TH pad (ideal for helical antennas) or an IPEX connector. Since both versions share the same physical form factor, a single board can be designed, allowing for subsequent frequency selection based on the region or project.

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