功能

• RFM9xW 433/868/915 MHz ISM LoRa Transceiver, HopeRF
• The RFM9xW Transceiver Module features a Semtech SX1272 transceiver chip. This chip uses a chirped diffuse spectral modulation called LoRa, which improves receiver sensitivity and increases range. This module can also use OOK and FSK modulation schemes, so it is compatible with other standards such as IEEE 802.15.4 and wMBUS. LoRa has better interference resistance than traditional FSK, which improves coexistence in crowded channels.
• Module Features RF Frequency Range: 433/868/915 MHz ISM Band Channel Bandwidth: 125 kHz, 250 kHz, or 500 kHz RF Output: +20 dBm Maximum Receiver Sensitivity: -119 dBm @ 1.2 kbps (FSK), -148 dBm @ 18 bps (LoRa, SF = 12, CR = 4/6) Modulation: LoRa, FSK, GFSK, MSK, GMSK, or OOK OTA Data Rate: Up to 250 kbps (FSK), Up to 37.5 kbps (LoRa) Range: Up to 15 km (line-of-sight) Packet Engine: Up to 256 bytes (with CRC) Forward Error Correction (FEC), Coding Rate Selectable 127 dB Dynamic Range RSSI Host Communications: Serial SPI Temperature Sensor and Low Battery Indicator Power: +1.8 V → +3.6 V dc Operating Temperature Range: -20 → +70°C Dimensions: 16 x 16 mm Application: Automatic meter reading, Home/Building Automation, Wireless Alarm/Security Systems, Industrial Monitoring/Control, Long Distance Communications for the Internet of Things (IoT)
• RS Product Code
• ; 125-1261 125-1261 RFM98W-433S2 433 Hz; 125-1259 125-1259 RFM95W-868S2 868 MHz; 125-1260 125-1260 RFM95W-915S2 915 MHz