RFM65W-868S2

RF Receivers Overview

The RFM65W-868S2 is a low-cost Sub-GHz receiver module operating in the 868 MHz ISM band. It utilizes Semtech SX1272 technology with LoRa modulation for enhanced sensitivity and range. Key parameters include a maximum output power of +13dBm, receiver sensitivity of -148dBm at 18bps (LoRa), and support for SPI interface communication. The module operates on a supply voltage of 1.8V to 3.6V DC, with dimensions of 16mm x 16mm x 1.8mm.

RF Receivers Feature Summary

• Utilizes LoRa spread spectrum technology for improved receiver sensitivity and long-range capability
• Supports multiple modulation schemes including FSK, GFSK, MSK, GMSK, and OOK for standard compatibility
• Integrated packet engine with CRC and optional forward error correction
• Compact surface-mount design suitable for space-constrained IoT applications

RF Receivers Applications

• Automatic meter reading systems
• Home and building automation
• Wireless alarm and security systems
• Industrial monitoring and control
• IoT long-range communication networks

RF Receivers Procurement Notes

Verify that the specific part number RFM65W-868S2 corresponds to the receiver-only variant rather than the transceiver version, as datasheets may list both functionalities under similar naming conventions. Confirm the 868 MHz frequency band alignment with regional regulatory requirements before procurement. Ensure the supplier provides official documentation confirming the 1.8V to 3.6V operating voltage range and SPI interface compatibility for your host microcontroller.

RF Receivers Selection Notes

Select this module when only reception functionality is required for Sub-GHz applications, distinguishing it from full transceiver variants like the RFM95 series. It is suitable for battery-powered devices due to its low power consumption profile. Consider the -148dBm sensitivity figure for link budget calculations in noisy environments. Verify that the 868 MHz band meets local licensing exemptions for your deployment region.

RF Receivers Part Context

This component belongs to the RF Solutions RFM65W series, which are cost-effective receiver modules based on the Semtech SX1272 chip. The series supports various license-free ISM bands including 315, 433, 868, and 915 MHz. The RFM65W-868S2 specifically targets the European 868 MHz band, offering a compact alternative to full transceivers for receive-only IoT nodes.

RF Receivers Replacement Considerations

Public confirmed substitute part numbers: None identified.