E22-400T22D module de port série sans fil sortie de niveau UART TTL compatible avec la tension de port IO 3.3V et 5V
[La fréquence]：410.125~493.125MHz
[Du pouvoir]：22dBm
[Distance]：5km
[Taille]：21*36mm
[Lester]：6.7±0.2g
[Poids du produit]：6.7±0.2g
[Introduction]：E22-400T22D est un module de port série sans fil (UART) basé sur la solution SEMTECH LoRa. Il dispose d'une variété de modes de transmission, fonctionnant à 410,125 MHz ~ 493,125 MHz, fréquence (433,125 MHz par défaut), technologie de spectre étalé LoRa, sortie de niveau TTL, compatible avec la tension des ports IO de 3,3 V et 5 V.
Magasin officiel
| 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) |