[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.
[IC]：SX1281
[Frequency]：2.4~2.5GHz
[Power]：27dBm
[Distance]：8.0km
[Interface]：SPI
[Weight]：1.7±0.1g
| 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 | ℃ | - |
