E28-2G4M20S Ebyte 20dBm SX1281 Long Range 8km Lora Transceiver
[IC]：SX1281
[Frequency]：2.4~2.5GHz
[Power]：20dBm
[Distance]：6.0km
[Interface]：SPI
[Weight]：1.9±0.1g
[Introduction]：E28-2G4M20S is a 2.4GHz lora module designed by Chengdu Ebyte.The IC SX1281 features multiple physical layers and various modulating methods such as LoRa, FLRC and GFSK. The special modulating and processing methods enable longer operating range with LoRa and FLRC modulating, and the GFSK method covers BLE protocol.
Official Store| RF Parameter | Value | Remark |
| Working frequency | 2400~2500 MHz | Default: 2.4GHz (52MHz oscillator) |
| Transmitting power | 20 dBm | About 100mW |
| Receiving sensitivity | -132 dBm | Air data rate: 125kbps |
| Air data rate | 0.125M~2Mbps | Default: 125kbps |
| Test distance | 6000m | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 125kbps |
| Hardware Parameter | Value | Remark |
| Size | 26.5 * 15 mm | |
| Antenna type | IPEX / PCB | |
| Communication interface | SPI | |
| Package | SMD |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 1.8 | 3.3 | 3.6 | V | |
| Communication level | 1.8 | 3.3 | 3.6 | V | |
| Transmitting current | 130 | 140 | 150 | mA | 20dBm（100mW） |
| Receiving current | 9 | 10 | 11 | mA | |
| Sleep current | 1 | 2 | 3 | μA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |