[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.
Magasin officiel| Main parameters | performance | Remark | |
| Minimum | Maximum | ||
| Power supply voltage (V) | 0 | 3.6 | Over 3.6V will permanently burn the module |
| Blocking power (dBm) | - | 10 | The probability of burning is lower when used at close range |
| Operating temperature (°C) | -40 | 85 | Industrial grade |
| Main parameters | performance | Remark | |||
| Minimum | Typical values | Maximum | |||
| Operating voltage (V) | 3 | 3.3 | 3.6 | ≥3.3V can guarantee output power | |
| Communication level (V) | 3.3 | Using 5V TTL has the risk of burning | |||
| Operating temperature (°C) | -40 | - | 85 | Industrial-grade design | |
| BLE/WIFI operating frequency band (GHz) | 2.4 | - | 2.48 | Support ISM band | |
| LoRa operating frequency band (MHz) | 410.125 | 433.125 | 493.125 | ||
| LoRa air rate (Kbps) | 2.4 | 62.5 | 62.5 | ||
| Power consumption | Emission current (mA) | 200 | Instantaneous power consumption | ||
| Receive current (mA) | 11 | ||||
| Deep sleep current (μA) | 6.7 | ||||
| BLE transmit power (dBm) | -9 | 20 | 20 | Configurable | |
| Wi-Fi transmit power (dBm) | - | 20 | - | Fixed value, not configurable | |
| LoRa transmit power (dBm) | 10 | 22 | 22 | Configurable | |
| Main parameters | describe | Remark |
| BLE communication distance | 500m | In a clear and open environment, the antenna gain is 5.0dBi and the height is 2 meters. |
| WIFI communication distance | 500m | In a clear and open environment, the antenna gain is 5.0dBi and the height is 2 meters. |
| LoRa communication distance | 5 km | In a clear and open environment, the antenna gain is 3.5dBi, the height is 2 meters, and the air data rate is 2.4kbps. |
| protocol | BLE/WIFI/LoRa | BLE5.0、Wi-Fi(IEEE 802.11b/g/n) |
| Communication interface | UART | TTL level |
| Packaging | SMD | - |
| LoRa data packet length | 240 Btyes | The command can be set to send packets of 32/64/128/240 bytes |
| BLE MAN | 517 Btyes | - |
| UART RX BUFFER | 1024 Btyes | - |
| UART TX BUFFER | 1024 Btyes | - |
| LORA_TX_BUF_SIZE | 2028 Btyes | - |
| BLE_TX_BUF_SIZE | 1024 Btyes | - |
| TCP_TX_BUF_SIZE | 2048 Btyes | |
| Interface | 1.27mm | Stamp Holes |
| Dimensions | 14*20mm | ±0.2mm |
| LoRa antenna interface | IPEX/Stamp Hole | Equivalent impedance is about 50Ω |
| BLE/WIFI antenna interface | IPEX | |
| Product weight | 1.2g | ±0.1g |