[Fréquence de fonctionnement]: 2,4 GHz
[Protocole de communication]:BLE 5.3
[Portée de communication]: 200 m
[Type d'antenne]: IPEX Gen 3
[Dimensions]:10*10mm
[Poids]:0,4 ± 0,1 g
[Introduction]:Les modules de la série E104-BT56 sont des modules Bluetooth série-vers-BLE basés sur le protocole Bluetooth 5.3. Ils prennent en charge les modes Central, Périphérique, Central-Périphérique (double rôle) et Observateur, avec une capacité allant jusqu'à 8 connexions simultanées. Ces modules offrent également des fonctionnalités telles que la diffusion (advertising) à faible consommation, la transmission transparente de données, la configuration et les mises à jour par voie hertzienne (OTA), ce qui les rend adaptés à des applications telles que les dispositifs portables intelligents et la domotique.

| Serial Number | Pin Definitions | Pin direction | illustrate |
| 1 | GND | - | power ground |
| 2 | NC | - | Users don't need to worry, it's suspended. |
| 3 | RESTORE | input | After the internal pull-up switch is held low for at least 5 seconds, all parameters are reset to factory settings and the module automatically restarts. |
| 4 | DATA | Output | Data output indication: A high-level signal is output upon receiving BLE data over the air, and a low-level signal is output after the BLE data has been transmitted via serial port. |
| 5 | LINK | Output | Connection status indicator pin: high level indicates connected, low level indicates disconnected. |
| 6 | NC | - | Users don't need to worry, it's suspended. |
| 7 | RESET | input | Reset pin, low level reset |
| 8 | WRP | input | The default low level indicates normal mode, during which serial communication is possible. Pulling it high inputs sleep mode, and serial communication is disabled. (Edge triggered) |
| 9 | RXD | input | Serial port input |
| 10 | TXD | Output | Serial port output |
| 11 | GND | - | power ground |
| 12 | VCC | input | Positive power supply, 1.8V~3.6V, 3.3V power supply recommended. |
| 13 | NC | - | Users don't need to worry, it's suspended. |
| 14 | NC | - | Users don't need to worry, it's suspended. |
| 15 | LOG_TX | Output | Log serial port output is disabled by default; it can be left floating if not used. |
| 16 | NC | - | Users don't need to worry, it's suspended. |
| 17 | NC | - | Users don't need to worry, it's suspended. |
| 18 | GND | - | power ground |