Technical Specifications
| Chipset | Semtech SX1276/78 |
| Application | Smart home |
| Interface Type | UART Serial Port, 33 V TTL Level |
| External Antenna | High-Gain Antenna |
| Host Interface | SPI |
| Power Waste | DC 3.3 ± 5% |
| Transmit Power | Max. 22 dBm, user configurable |
| Communication Distance | 1.55 mile (2.5 km) |
| Air Rate | 7K bps to 62.5K bps, three options for air speed (62.5K, 21.875K, 7K) |
| Receiving Sensitivity | -116 dBm, sensitivity corresponding to 62.5K bps air rate |
| Modulation | LoRa |
| Working Voltage | 1.8 V to 3.6 V, ≥3.3 V can ensure output power, exceeding 3.6 V may burn out the module |
| Communication Level | 3.3 V, suggest adding level conversion when using 5.0 V TTL |
| Working Frequency | 410.125 MHz to 509.125 MHz 850.125 MHz to 929.125 MHz Module operating frequency band supports ISM frequency band |
| Emission Current | 128 mA, instantaneous power consumption |
| Working Current | 14 mA |
| Antenna Interface | IPEX or Stamp hole, characteristic impedance approx.. 500 Ω |
| Operation Temperature | -40 °F to 185 °F (-40 °C to 85 °C) |
| Size | 0.78 in × 0.55 in (2 cm × 1.4 cm) |
| Weight | 0.04 ± 0.0035 oz (1.2 ± 0.1 g) |
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