[Solution logicielle]:SX1281
[Fréquence de fonctionnement]: 2,4 à 2,5 GHz
[Puissance d’émission]:20 dBm
[Portée]:6 km
[Dimensions]:16*26 mm
[Introduction]:Le module E28-2G4T20SX d'Ebitech est un port série sans fil UART basé sur la puce RF SEMTECH SX1281. Il prend en charge la transmission transparente, fonctionne dans la bande 2,4 GHz et intègre les technologies de modulation/démodulation LoRa, FLRC et GFSK, avec une sortie de niveau TTL. Ce module sans fil LoRa inclut des fonctions de chiffrement et de compression des données. La transmission de données par voie hertzienne étant aléatoire, des algorithmes de chiffrement et de déchiffrement robustes renforcent la sécurité des données transmises. La compression des données réduit le temps de transmission et le risque d'interférences, améliorant ainsi la fiabilité et l'efficacité de la transmission.
| Pin number | Pin Name | Pin direction | Pin Applications |
| 1 | NRST | input | Module reset pin, low level reset |
| 2 | GND | Reference | Module ground wire |
| 3 | M2 | Input (very weak pull-up) | The combination of M2, M1, and M0 determines the module's 8 operating modes (must not be left floating; if not in use, it can be grounded). |
| 4 | NC | - | Empty foot (not yet available; users do not need to worry about it). |
| 5 | NC | - | Empty foot (not yet available; users do not need to worry about it). |
| 6 | NC | - | Empty foot (not yet available; users do not need to worry about it). |
| 7 | NC | - | Empty foot (not yet available; users do not need to worry about it). |
| 8 | GND | Reference | Module ground wire |
| 11 | GND | Reference | Module ground wire |
| 12 | ON | - | Antenna interface (50Ω characteristic impedance) |
| 13 | GND | Reference | Module ground wire |
| 14 | GND | Reference | Module ground wire |
| 15 | GND | Reference | Module ground wire |
| 16 | GND | - | Module ground wire |
| 19 | GND | - | Module ground wire |
| 20 | M0 | Input (very weak pull-up) | The combination of M2, M1, and M0 determines the module's 8 operating modes (must not be left floating; if not in use, it can be grounded). |
| 21 | M1 | Input (very weak pull-up) | The combination of M2, M1, and M0 determines the module's 8 operating modes (must not be left floating; if not in use, it can be grounded). |
| 22 | RXD | input | TTL serial port input, connected to the external TXD output pin; configurable as open-drain or pull-up input, see parameter settings for details. |
| 23 | TXD | Output | TTL serial port output, connected to the external RXD input pin; configurable as open-drain or push-pull output, see parameter settings for details. |
| 24 | TO | Output | Used to indicate the module's operating status; outputs a low level during the power-on self-test initialization period when the user wakes up the external MCU; (can be left floating). |
| 25 | VCC | - | Module power supply positive reference, voltage range: 2.4~5.5V DC |
| 26 | GND | - | Module ground wire |