[Poids du produit]：7.5g±0.1g
[IC]：LLCC68
[La fréquence]：410.125~493.125MHz
[La puissance]：22dBm
[La distance]：5km
[La taille]：21*36mm
[Introduction]：E220-400T22D adopte une nouvelle génération de technologie à spectre étalé LoRa et un module de port série sans fil (UART) conçu sur la base du schéma de puce LLCC68. Il a une variété de méthodes de transmission, fonctionne dans la bande de fréquence (410.125 ~ 493.125 MHz) (par défaut 433.125 MHz), sortie de niveau TTL, compatible avec la tension de port IO 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) |