E28-2G4M27S 2.4G Lora Transceiver Radio Wireless Module Sx1281 Upgraded Version Lora Transmitter Receiver Modules
[Chip solution]：SX1281
[Frequency]：2.4~2.5GHz
[Transmitter power]：27dBm
[Communication diatance]：8.0km
[Communication Interface]：SPI
[Product weight]：1.7±0.1g
[Introduction]：E28-2G4M27S is a 2.4GHz small SMD module (pin spacing 1.27mm)designed by Chengdu Ebyte. With built-in PCB antenna, SPI interface, it owns TX power of 500mW with power consumption.E28-2G4M27S is a hardware platform without firmware, so users need to conduct secondary development.
Official Store| RF Parameter | Value | Remark |
| Working frequency | 2400~2500 MHz | ISM band |
| Transmitting power | 27 dBm | About 500mW |
| Receiving sensitivity | -132 dBm | Air data rate: 595kbps |
| Air data rate | LoRa(bps)：0.595k~253.9k FLRC(bps)：260k~1.3M GFSK(bps)：125k~2M | Defined by user via programming |
| Test distance | 8000m | Test condition：clear and open area, antenna gain: 5dBi， antenna height: 2.5m，air data rate: 1kbps |
| Hardware Parameter | Value | Remark |
| Size | 26.5 * 15 mm | - |
| Antenna type | IPEX / PCB | 50Ω Impedance |
| Communication interface | SPI | 0～10Mbps |
| Package | SMD | - |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.5 | 3.3 | 3.6 | V | ≥3.3 V ensures output power |
| Communication level | - | 3.3 | - | V | For 5V TTL, it may be at risk of burning down |
| Transmitting current | - | 580 | - | mA | Instant power consumption |
| Receiving current | - | 14.5 | - | mA | - |
| Sleep current | - | 2.0 | - | μA | Software is shut down |
| Operating temperature | -40 | 20 | +85 | ℃ | - |
| Operating humidity | 10 | 60 | 90 | % | - |
| Storage temperature | -40 | 20 | +125 | ℃ | - |