[Interface de communication]:UART
[Fréquence]: 2,4 GHz + 433 MHz
[Protocole de communication]:BLE/Wi-Fi/LoRa
[Distance de communication]:0,5 km/5 km
[Dimensions]:14 x 20 mm
[Poids]:1,2 ± 0,1 g
[Introduction]:EWM22A-400BWL22S est un module de transmission de données sans fil tout-en-un BLE, Wi-Fi et LoRa développé par Chengdu Ebyte. Cette série de modules sans fil prend en charge les communications BLE, Wi-Fi et LoRa. La fonction LoRa est compatible avec les modules de la série E22X. De type CMS, il offre une puissance de transmission maximale BLE/WIFI de 20 dBm et une puissance de transmission LoRa de 22 dBm. L'espacement des broches est de 1,27 mm et le micrologiciel est installé en usine. Puissant, il est particulièrement adapté aux applications de transmission de données.
| Pin number | Pin Name | Pin direction | Pin Purpose |
| 1 | GND | - | Power Ground |
| 2 | ON | - | LoRa antenna interface, 50 ohm characteristic impedance |
| 3 | GND | - | Power Ground |
| 4 | GND | - | Power Ground |
| 5 | TX_EN | - | Reserved pins |
| 6 | RX_EN | - | Reserved pins |
| 7 | LINK | Output | Bluetooth/WIFI connection status indication pin: BLE: high level by default, low level when BLE is connected; |
| WIFI: Default high level, WIFI is connected, TCP is not connected, output 1Hz high and low level changes, TCP is connected, output low level. | |||
| 8 | WAKE | input | Deep sleep wake-up pin, low level wake-up. |
| 9 | NC | Input/Output | Reserved pins |
| 10 | NC | Input/Output | Reserved pins |
| 11 | NC | Input/Output | Reserved pins |
| 12 | NC | Input/Output | Reserved pins |
| 13 | GND | - | Power Ground |
| 14 | VCC | input | Power input: 3.0~3.6V |
| 15 | TXD | Output | TTL serial port output, connected to external RXD input pin; |
| 16 | RXD | input | TTL serial port input, connected to external TXD output pin; |
| 17 | NC | - | Reserved pins |
| 18 | NC | - | Reserved pins |
| 19 | TO | Output | Used to indicate the working status of LoRa; the user wakes up the external MCU, and outputs a low level during the power-on self-test initialization period; (can be left floating) |
| 20 | NC | - | Reserved pins |
| 21 | RST | input | Reset pin, low level reset |
| 22 | GND | - | Power Ground |
| 23 | NC | - | Reserved pins |
| 24 | GND | - | Power Ground |