[La fréquence]:850.125~930.125MHz
[Du pouvoir]:22dBm
[Distance]:5km
[Taille]:21*36mm
[Lester]:6.5±0.2g
[Poids du produit]:6.5±0.2g
[Introduction]:E22-900T22D est un module sans fil (UART) avec plusieurs modes de transmission, fonctionnant dans le 850.125MHz ~ 930.125MHz, (par défaut 868.125MHz). Il dispose de la technologie à spectre étalé LoRa, d'une sortie de niveau TTL, compatible avec la tension de port IO 3,3 V et 5 V.
| Serial Number | pin | Pin direction | Remark |
| 1 | M0 | Input (very weak pull-up) | In conjunction with M1, it determines the module's four operating modes (it cannot be left floating; if not in use, it can be grounded). |
| 2 | M1 | Input (very weak pull-up) | In
conjunction with M0, it determines the module's four operating modes
(it cannot be left floating; if not in use, it can be grounded). |
| 3 | RXD | Input | TTL serial port input, connected to the external TXD output pin; |
| 4 | TXD | Output | TTL serial port output, connected to the external RXD input pin; |
| 5 | TO | Output | Used to indicate the module's working status; When the user wakes up the external MCU, it outputs a low level during the power-on self-test initialization period; (this level can be left floating). |
| 6 | VCC | Input | Module power supply positive reference, voltage range: 3.0~5.5V DC |
| 7 | GND | Input | Module ground wire |
| 8 | Fixing hole | Mounting hole (connected to GND on the module) | |
| 9 | Fixing hole | Mounting hole (connected to GND on the module) | |
| 10 | Fixing hole | Mounting hole (connected to GND on the module) |