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The RFM9xW Transceiver Modules feature the Semtech SX1272 transceiver chip which uses a variation of Chirp Spread Spectrum coding called LoRaâ„¢, to improve receiver sensitivity and hence achieve extended range. The module can also use OOK and FSK modulation schemes to maintain compatibility with other standards such as IEEE 802.15.4 and wMBUS. LoRa features increased interference immunity over conventional FSK providing an enhanced coexistence capability in crowded channels.
â€¢ RF Frequency Range: 433/868/915MHz ISM Band. â€¢ Channel bandwidth: 125kHz, 250kHz or 500kHz. â€¢ RF Power Output: up to +20dBm. â€¢ Receiver Sensitivity: -119dBm @ 1.2kbps (FSK), -148dBm @ 18bps (LoRa, SF=12, CR=4/6). â€¢ Modulation: LoRaâ„¢, FSK, GFSK, MSK, GMSK or OOK. â€¢ OTA Data Rate: up to 250kbps (FSK), up to 37.5kbps (LoRa). â€¢ Range: up to 15km (Line of Sight). â€¢ Packet engine up to 256 bytes with CRC. â€¢ Forward Error Correction (FEC) with selectable Coding Rate. â€¢ 127dB dynamic range RSSI. â€¢ Host communication: serial SPI. â€¢ Temperature sensor and low-battery indicator. â€¢ Power supply: +1.8V to +3.6Vdc. â€¢ Operating temperature range: -20 to +70°C. â€¢ Dimensions 16 x 16mm. â€¢ Applications: Automated Meter Reading, Home & Building Automation, Wireless Alarm & Security Systems, Industrial Monitoring & Control, Long-range communication for the Internet of Things (IoT)
125-1261 RFM98W-433S2 433MHz. 125-1259 RFM95W-868S2 868MHz. 125-1260 RFM95W-915S2 915MHz
Module Type = Transceiver
Supported Frequency Bands = 915 MHz
Modulation Technique = FSK, GFSK, GMSK, MSK, OOK
Maximum RF Data Rate = 300kbit/s
Maximum Output Power = +13dBm
Receiver Sensitivity = -148dBm
Supported Bus Interfaces = SPI
Supply Voltage = 3.3V
Dimensions = 16 x 16 x 1.8mm
Height = 1.8mm