EWM22A-400BWL22S BLE/WiFi/LoRa All-in-one wireless module support Remote configuration Relay networking Low power consumption
[Communication Interface]：UART
[Frequency]：2.4GHz + 433MHz
[Communication Protocol]：BLE/Wi-Fi/LoRa
[Communication diatance]：0.5km/5km
[Size]：14*20mm
[Product weight]：1.2 ± 0.1g
[Introduction]：EWM22A-400BWL22S is a BLE, WIFI, and LoRa all-in-one wireless data transmission module developed by Chengdu Ebyte. This series of wireless modules supports BLE, WIFI, and LoRa communications. The LoRa function is compatible with the E22X series modules. It is a SMD type, with a maximum BLE/WIFI transmission power of 20dBm and a LoRa transmission power of 22dBm. The pin spacing is 1.27mm, and it comes with factory-installed firmware. It is powerful and mainly suitable for data transmission application scenarios.
Official Store| 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 |