[IC]：SX1278
[Frequency]：410～493MHz
[Power]：30dBm
[Distance]：10km
[Product weight]：5.5±0.1g
[Size]：24*38.5mm
[Introduction]：E32-400M30S is a self-developed, 433/470MHz LoRa TM SMD wireless module with the maximum transmission power of 1W which is based on the SX1278 produced by Semtech in the United States.
| Main parameter | Min | Type | Max | Unit | Remark |
|---|---|---|---|---|---|
| Operating voltage | 3.3 | 5 | 5.5 | V | ≥5.5 V ensures output power |
| Communication level | - | 3.3 | - | V | - |
| Operating temperature | -40 | - | +85 | ℃ | Industrial grade |
| Operating frequency | 410 | - | 493 | MHz | - |
| TX current | - | 650 | - | mA | - |
| RX current | - | 19 | - | mA | - |
| Sleep current | - | 2 | - | μA | - |
| Max TX power | - | 30 | - | dBm | - |
| Receiving sensitivity | -123 | -124 | -125 | dBm | Air data rate is 1.2 kbps |
| Main parameter | Description | Remark |
|---|---|---|
| Reference distance | 10Km | Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 250 kbps |
| FIFO | 256Byte | Maximum length of single send |
| Crystal Oscillator | 32MHz | Passive crystals |
| Protocol | LoRaTM(recommended) | FSK/GFSK/MSK/GMSK/OOK |
| Package | SMD | Spacing of 2.54 mm |
| Interface | 2.54mm | Sample hole |
| Communication interface | SPI | 0～10Mbps |
| Size | 24*38.5mm | - |
| Antenna | Sample hole / IPEX | 50 ohm impedance |
| Pin No. | Item | Direction | Description |
| 1 | GND | - | Ground |
| 2 | GND | - | Ground |
| 3 | GND | - | Ground |
| 4 | GND | - | Ground |
| 5 | GND | - | Ground |
| 6 | RXEN | Input | RF switch receiving control pin, connected to external MCU IO; high level effective |
| 7 | TXEN | Input | RF switch receiving control pin, connected to external MCU IO: high level effective |
| 8 | DIO2 | Input Output | General IO port (see SX1278 manual for details) |
| 9 | VCC | - | Power supply, range 3.3 〜5.5V (external ceramic filter capacitor is recommended) |
| 10 | VCC | - | Power supply, range 3,3 〜5.5V (external ceramic filter capacitor is recommended) |
| 11 | GND | - | Ground |
| 12 | GND | - | Ground |
| 13 | NC | - | Suspend |
| 14 | DIO3 | Input Output | General IO port (see SX1278 manual for details) |
| 15 | DIO4 | Input Output | General IO port (see SX1278 manual for details) |
| 16 | DIOS | Input Output | General IO port (see SX1278 manual for details) |
| 17 | GND | - | Ground |
| 18 | GND | - | Ground |
| 19 | DIO1 | Input Output | General IO port (see SX1278 manual for details) |
| 20 | DIO0 | Input Output | General IO port (see SX1278 manual for details) |
| 21 | NRST | Input | Chip reset trigger input pin |
| 22 | MISO | Output | SPI data output pin |
| 23 | MOSI | Input | SPI data output pin |
| 24 | SCLK | Input | SPI data output pin |
| 25 | NSS | Input | the module chip selects the pin used to start an SPI communication |
| 26 | GND | - | Ground |
| 27 | ANT | - | Antenna interface. Sample hole (50 C characteristic impedance) |
| 28 | GND | - | Ground |
